Hydromaxm, interesting. Ya got me stumped. I guess you'd get gains if you were stretching while massaging the prostate. Maybe it would make the ligs more pliable. I would think you'd need more than 2 hands to do it though.
Seems to me this happens, because most men are unable to achieve an erection after the operation. Consequently, their penis will stay flacid all the time. Guess what happens then? Shrinkage! You can see this with men wearing chastity belts(especially with spikes in it) or that gets a castration(morons! hehe)
I know it has been said that a to strong of a PC Muscle can effect length gains, which is one reason why DLD has had such Success with any of his Blasters, he does a reverse kegel, which releases the ligs from the PC.