Answer: You can try to sell your time share, but typically there are far more desperate sellers than there are buyers for these "opportunities."
At best, you'll reap only a fraction of what you originally paid, and you may have to in essence give away the time share to anyone willing to pay the maintenance fees.
You'll still need to pay off the loan you used to buy the time share, or you'll risk damage to your credit
You can learn more about selling time shares from the Timeshare Users Group, at tug2.com.