It is a stupid rule, but by the rule, it wasn't a catch... Unless its deemed he made a natural football move. I personally (as a blatant homer, I'll admit) would argue that when he 1) turned after catching the ball, 2) took two or three steps, and 3) made a notable effort to stretch to the endzone made arguably at least one, if not THREE different football moves before going to ground and losing control of the ball.