I have seen this done before, but it also depends on if his name is on the mortgage. If not, it is possible. His credit and income would be the sole qualification and your income would not count and your name could not be on the deed until the lender allows it.
I would contact a mortgage broker that you want to work with and ensure they will accept that.
On the short sale though, you need to ask your current lender, but if you file joint taxes, they could use that as a qualification of hardship evidence. If you have no income effecting hardship, you may not be eligible to short sale. Check with your lender.... more
If you are a for sale by owner the post is not allowed, you can however try blogging about the property; if and when you do list with an agent, he/she can post it for you, ask; or consider any flat fee realty company that feeds into the site.... more