This is about laughable....it's not just Henne that needs to read that blitz, the WHOLE offense does. Generally speaking, when a QB reads the blitz, he's going to go to a hot route...the designated reciever for the hot route needs to read it as well. Henne and the reciever need to see the same thing and be on the same page as far as what route the reciever will then run and Henne needs to trust that the guy will do just that.....it's only going to come with experience in the offense and with the recievers.
Another reason I am an advocate for getting a real TE.