The Reason WHY "Alpha Rolling" your dog is bad news
I think it has been pretty well established by most trainers that the Alpha Roll is a bad idea. Here is a link to a video that clearly explains why.
The points that are excellent that I will share:
"Alpha Roll" submissive behavior between dogs is an OFFERED behavior by the dog on his back. It is NOT forced by the more dominant dog.
Corrections are not meant to suppress a behavior (if you correct a dog to suppress a behavior OR you think that is what a correction is for you are doing it wrong/don't understand corrections).
Enjoy. Good video. Excellent trainer.