The game has now been removed from my betting site (where it has been Penn State between -23 1/2 and - 24 all week). I suspect the larger sites are uncomfortable with it and that too much of the action is coming in on one side or the other (which begs the question "on which side"). A puzzler for a lot of reasons already discussed under the OP, but I suspect some of the betting houses simply want to walk away from it due to the uncertainties at QB. Personally, I think Roberson starts and plays the entire game unless he is injured or Penn State is trailing in the second half and needs Clifford to win it (which I would consider unlikely).