To an outside observer there are some apparent "facts" surrounding Koyack;
-He has visited OSU (more than a few times, I believe).
-He really seems to like OSU and the coaches.
-He was reportedly an early OSU lean.
Clearly, things have changed and it is painfully obvious why...OSU's lack of using the TE on offense. Ben can see it with his own two eyes and you better believe ND, PSU and everyone else is using that against OSU. Ben is taking heed and, rightfully so, appears to have legit concerns. At this point it would be surprising if he chose OSU. That said, I don't think all hope is lost at all. OSU just needs to put up or shut up...
I think OSU's best hope (won't say "only" hope) is to convince him not to commit until next fall until during CFB season or sometime soon after. If Ben can hold off and OSU can prove that Stoneburner and the flex TE position will become a part of the offense then I think OSU has a shot. Otherwise, I don't know why he would come here (and as a pass catching TE I don't blame him one bit).