Duh! They hire another lawyer.
Okay, that's a little harsh. Actually, they find out why he won't sign it and try to fix the problem(s). If they can't or won't then it becomes an "Oh sh*t" moment and they just shut up until they can figure their next move. And during all of this time you should be figuring out your next move, as in, Buy, Sell, Hold.
Own TTDZ. Holding mine. Maybe buying more. GLTY