The right call by your definition is that anyone other than a QB can get hit with a helmet anywhere on his person and not get flagged for it, and that's because the rule basically makes everyone other than QBs expendable.
I think the rule is if the person is an active runner and if a QB goes all Mike Vick and runs from the pocket, he's the same as any other player. There really is no debating it, by the rulebook, it was a clean hit. Does the rule need to be changed? That's debatable. It really was an unlikely occurence, the first guy who hit Collie turned him into the other guy who fucked him up
This pretty much.
But the more glaring question coming out of this game... I can't be the only one that hates listening to Phil Simms call a game, right?
No, he's dreadful. But alas in all of his infinite Phil-osophy I now know that helmet to helmet hits ARE allowed if you are a runner. OK, Phil. Whatever you say.