It didn't bother me either.  I just wish we had had a DB close enough to the FL WR to tackle him before he made the catch with a "no call".  The W would have been nice, but even better would have been the FL reactions   !

Concerning the hold call, it didn't look very bad, and had probably happened several times earlier without a call.  KY finally gets their O going again and marches down the field to get in position and then that happens.

BTW, KY lost the game imo when they couldn't execute a snap on that one drive.  A score there instead of a FG would have been huge. 

Lastly, Del Rio will get the credit for the comeback even though he really didn't do anything, so Mac has a challenge ahead of him.  Still can't figure out how he doesn't get better QB play with his supposedly being an offensive guru.