Is it one week rental? If so, I would stay away. It might be an II exchanged rented out and it's not allowed. If
DVC finds out you're renting an exchange, they can cancel it without refund.
If it's not a full week, I would double and triple check VRBO terms and conditions. If the reservation is not honored, will they refund you fully?
All in all, I would say the risk is a bit too high for me to be comfortable with it.