Junk_trunk: as many experienced have posted in this thread, I also do confirm 100% that those Indian or just any employer in the US, for that matter, can NOT force you to work for them if you are unwilling to. It does not matter if you signed however many contracts with whatever conditions, but if you do not want to work for anyone, they cant force you! 

I know this through a formal legal education/training - in short, you can leave your employer whenever you want, for any reason or no reason (even though you are in H1B). Likewise, your employer can fire you for any reason or no reason at all. It goes both ways! So nothing to worry about. 

Good Luck!