Well I've been working on making sure I am established as the leader in my 3 dog household (7yr, 2yr & 8mo old male GSD's). Being that Sampson the young one is growing up I want to make sure I dont have any pack problems down the road. I have 2 kennels now outside and just started putting 2 of them in there during the day when I'm at work. My older one doesnt get put in one. Anyway, I decided to take their toys away that they have outside and just to let them play with them when I want to play with them (this is at night when I am home and they are out of the kennel hanging in the back yard/house) well I did this and my ball playing crazy 2yr old ran outside and was like "wheres the toys???" and when he couldnt find a toy he started running after sampson and chasing him down. I dont think it was in fun, it was like he was harrassing/stalking him. He wouldnt leave him alone. Is this just frustation from not having a toy in his mouth and how should I deal with it? When they had free rein of the toys he never did this, maybe I should just leave the toys like they were, available when they want them? and I've noticed also lately that they both (the 2yr & 8mo old) are trying to hump each other- the older dog doesnt seem to get involved with any of this.
Never a dull moment with 3 dogs!!

Is there any reason that they need to play together?

I would get a handle on the whole humping thing as well. Sounds like the start of some issues with rank down the road.

I do allow my dogs to be together when I can supervise, but toys are highly coveted here, so I play with them one at a time or I end up with fights, even if there are two toys, the dogs end up wanting the same one.

I would say to keep the one instigating things on a long line so that you can control what he does when out with the others. Until he learns your rules about what behaviors will be acceptable you need to be able to stop him from making his own games and rules.

I guess I have just always let them play together because before the kennels that I just put up, they were loose together in the back yard while I was at work and never had any problems (that I know of, when I do bring the toys out they play fine together- everyone gets one and i kick and throw the balls but its when I put them up now hes focusing on the other dog. So I keep Fero(instigator) on the long line when toys are up and correct for chasing Sampson(young one)? then hopefully he will get the drift that when toys are up that hes to behave. I just am thinking that things were going ok but now that I've changed it I'm bringing out behaviors that werent there before-so why change it? but then I think maybe I'm bringing out behaviors that would have come out eventually anyway and at least I'm dealing with them now before they could be worse down the road?
so as far as the humping, correct with a stern growly NO/phooie and a Cesar finger bite

Mmm, yeah, I would keep him on a long line and not allow him to even start even looking like he is going to start anything. Redirect his attention.....I am trying to think of how I would do corrections for that.......without confusing the crud out of you and everyone else here...

Hopefully some other experienced people will chime in here as well.....

If you did not have a problem when the toys were down then why not go back to hat?

I have the pack dvd as well but everything needs to be tweeked to tailor the individual case.

My dogs have free acsess to the toys and I see no reason to change. There are no fights, no guarding and always let me take food or whatever.

If it aint broke dont fix it.

While I agree with "If it ain't broke....." there is still the humping and stalking/instigating issues....even though toys "curb" that now.....it may not work later and needs to be handled before it escalates. IMHO anyway.

One of the main reasons I wanted to take the toys up, is that Fero is so nuts about playing that whenever I'm out back he will stand their with his jolly ball and bark, bark, bark until I finally kick it or throw it- it drives me crazy, he has this yappy bark too so its extra irritating. So I thought well I'll just pick up the toys until I'm ready to play with them (since I'm the pack leader) then the problem started...I wonder if I used a bark collar on him for that if that would work?? I know I still have other issues with them to address with the humping, etc. which may be more of a problem since I think that has to do with trying to establish their rank in the pack

Where is he at with his obedience? My Dutch can the same way and sometimes I just want to throttle him when he barks and jumps at me to get my attention. When I am doing something outside and he is with me (like yardwork) I put him in a down/stay. Or he goes in his crate until I am ready to play.

He's still learning but he can do a down/stay. So do you think I should try to make something "good" out of it by doing some obedience like a down/stay, etc instead of using a bark collar? I dont want to inhibit his play drive at all since I want to use it for training obedience (with hopes in competing in akc) but I also want to keep my sanity when I'm outside with them

I would do that. He has learned that if he barks at you, you will eventually play because he barks.

Switching it to "do this instead and you will reap the reward" will help to break that cycle. When Rock barks like that, the toy goes away and the game stops.