I saw this and while my DS is not there yet, it reminded me of stories that my mom tells me of when i potty learned. I guess (according to her) it was a big power struggle and she finally just asked me in desperation:
"L what will it take to have you use the potty!"
Apparently i told her "flower underpants"
She let me pick out my flower underpants and that was it, diapers were done.
So, maybe ask your LO what it will take. Just a thought, since this is a story that i have heard more than once from my mom.
SAHM to 4 cats, DS 5/09, DD 3/12 and 3# due 4/15. Home birthing, non vax, anti circ, co-sleeping, breastfeeding, real food eating pretty darn crunchy mama.