Yes it can be done. I'm in the process of doing so myself.
if you are from 'merica
Sue them, you have already taken pitty on them, so if they dont show signs of paying ( take your warning) sue them
Pay the loan off and then collect payments from the person you cosigned for.
Yep - sure can.
No, you would have to redo the loan.
Unfortunately if you cosigned a loan that means you were willing to pay the loan if the other signer defaults and if that happen they will go by any means to collect that money that you "cosigned/said" you would cover if the other person defaults. I would go after that person that you cosigned for if it has gone this far.
Very little, you will have to pay.
If you made the payment, yes.
only if you owe them money