Getting snaps with the 1st string is not an indicator to me. Schaffer got 1st team reps. Fulmer wanted to give him a shot during the UNLV game as a true freshman. I believe all along that Fulmer had Ainge pegged as the eventual starter, so he let Schaffer start and eliminate himself from the competition.
Sure, Schaffer showed out during the UNLV game but after than Ainge slowly got the job, then when Schaffer got out of bed and chased down a guy who had insulted his girlfriend, that was the end of Schaffer.