Ok, I got it! I CO the st I needed to on the back loop using a DPN, then left them on there while I knitted around the palm and back of the glove. Then once I got I got back to that glove (after knitting a round on the left glove), I transferred the CO st to the front of the loop and connected them. It may not have been the best way, but it worked!
I guess next time I will make the thumbs on the outside and not facing each other.
Thanks again for the help.