QUOTE(Mr. Big Dog @ Dec 25 2007, 08:38 PM)

If there's no evidence that a bona fide marriage ever existed - and from the original post it sort of sounds that way -
I wouldn't go that far... They obviously had enough evidence to show the marriage was bona fide to get the conditional green card. Obviously things fell apart since then.
I'm not trying to pressure the OP to sign the paperwork if she believes the relationship is not bona fide. I'm just saying she cannot have it both ways. If she truly believes her marriage is not bona fide then she should take steps to end it.
I remember reading sometime back on VJ that a spouse refusing to sign a I-751 while still married can be used as evidence of spousal abuse. Refusing to sign the removal of conditions paperwork without taking steps to file for divorce sends a mixed message that a good attorney might be able to exploit to allege spousal abuse.
There are two sides to every story and we don't know the facts of the case.
My advice... Sign the I-751 or cut him loose.