Uh yeah that could be a problem. I don't see any TE on this team capable of blocking him if he is there holding his ground like that from POA.
That's just freakish. There are lots of plays where he's tossing Kelce or another tight end with one arm. The best thing is he's only playing about 50% of the snaps so far. I almost think you have to use an extra T as a TE for either Clowney or Watt depending on the play.