I belive that Adam will win the final HOH and will choose to take Sheila with him. It will serve Ryan right for not usiing the veto on sharon, and he will see just how he was played when he gets out of the house and watches the show. Ryan won 10k already in the show, which he took away from Sheila (that if you remember Adam gave to her cuase she needed it) I think that he will bring Sheila not only becuase they have been paird up since the very beginning but becuase she has played the whinny "I am a single mother" card so often he feels sorry for her.
Sorry Ryan but if you want to make it to the final two you will have to win the last HOH