Originally Posted by infantrycak
It really doesn't matter if he is considered a QB or a RB. Rule 12, Section 2, Article 7(a) defines defenseless player and states "(1) A player in the act of or just after throwing a pass." So the player's position doesn't matter. LT threw a bunch of TD passes. If he had been nailed high while passing he would have been a defenseless player.
And since Cutler was called for an "illegal forward pass," he empirically was identified as "a player in the act of or just after throwing a pass" which carries the definition of "defenseless player," who cannot be exposed to a helmet-to-helmet hit. The latter penalty was not called on the field, but technically should have been, and this will be acknowledge by a fine from the league against Dobbins.