Nah, as long as you don't put his name on it...just don't joint anything with him, bank accounts, cars, taxes ect. Just went thru this mess with Hubby, thank goodness it's over with. Do yourself (him) a favor. Go to the IRS site and look up Offer in Compromise. Print out the required paperwork, then..and this is important, I can't stress this enough..go to the library, or book store and grab book on how to file it. Just like anything else with the IRS if you don't do it right, completely so, they find something to deny the offer on...so any help you can get from books and/or research is worth it's weight in gold.
Good Luck!
KAT