First off, I'd like to thank Mike and the others for the discussion. It's nice to have a difference of opinion on the web and not let it fall into a cat fight as so many do.
As for the out problem! We have retrained a dog that had a huge out problem. Pinch collars, e-collars. beatings just fired up this dog to highter fight.
Whe he came to our club with a new owner, our TD worked it out simply by letting the dog hang on till it decided to let go. That lasted almost 20 mins the first time. The dog was immediately rewarded with another bite. Within a month the dog had clean outs.
When the dog was sold to a national level competitor, that competitor resumed heavy handed training and lost a trial for, guess what, NO out.
The big IF (to me) is how the dog would have reacted if that foundation was motivational.
I have a 6 month old pup sired by that dog so my dog's progress is going to be interesting.
With a previously trained SPD or PPD I don't know how this would go. Do I think it could be REtaught to out cleanly? Yes!
would it fall back on previous problems under stress? Wish I had enough expierience to give an honest opinion!

You mean if the stress accompanied with poor handling? Or stress under continued proper handling?
Poor handling is always going to show somehow, no matter how the dog was motivated to learn.
If my dog isn't learning, I'm doing something wrong.
Randy

PS.
No expert, just my opnion.

Good question Randy!
The dog I was talking about could handle anything thrown at it. When it came back to club after the club member bought him back, it had a capped tooth (canine). I suspect he was exposed to excessive "correction".
Many people think that the tougher the dog, the heavier handed the correction. That's piss poor training!