M.W.
H.,
I've been meaning to make a posting similar to yours. My son will be 3 early December and hates to poop on the toilet. He cries for a diaper during the day when he knows he has to poop. Otherwise, he is completely potty pee trained - wears underwear all day long and pees on the toilet. I've tried bribing him with several things as rewards for pooping on the toilet - that only worked 3 times. Then he went back to pooping in his diaper.
He is my second son. My first son was early to potty pee train (by 2). Pooping on the toilet came later (2 1/2 months). He was nervous about it too. Eventually, the promise of a new toy got him to go on the toilet and then it was never a problem after that.
My family believes I need to tell me youngest son that "there are no more diapers". I'm not sure I want to do this for fear I will make him very nervous and very sick if he just won't go. My youngest son also has started a kids day out program which he is not taking to well. That's one reason I've been trying to just cope with the pooping in the diaper for awhile.
Good luck. I wasn't much help but at least you know there are others of us dealing with the same problem. I'll be checking back here to see if anyone else has advice that worked for them.