I just searched the CO website and couldn't find anything that said a reward ticket couldn't have a stopove and an open-jaw, and I found a fare for IAH/AUS for $49. That would work for me if CO allows it. I think that if I could be waitlisted on the award ticket, it would probably clear, but I couldn't get the CSR to do that. I also could up the ante and buy a refundable ticket IAH/AUS and just cash it in if the waitlist didn't clear. I'll check that out tomorrow.