Thanks for the lesson, I guess, but it really isn't all that "straightforward."
I took a look.
Rule 8: Forward Pass, Backward Pass, Fumble
Article 1 Definition. It is a forward pass if:
a.) the ball initially moves forward (to a point nearer the opponent's goal line) after leaving the passer's hands; or
b.) the ball first strikes the ground, a player, an official, or anything else at a point that is nearer the opponent's goal line than at the point at which it leaves the passer's hand(s).
To be fair, after a note, what follows is a reference to what you seem, to be implying about the passer being "in control."
When a player is in control of the ball and attempting to pass it forward, any intentional movement of his hand starts a forward pass.
There is an (a), (b), and © after that. a.) deals with "contact by an opponent", b.) is the tuck rule, and c.) is about "recocking" the arm. None of which are applicable to this call
I guess you're giving more credit to the "control of the ball" than I am, and I may be giving more credit to the definition. I will note that "control of the ball" is located in a subordinate clause to the meat of that sentence--"any intentional movement of his hand starts a forward pass."
Edit: I forgot the link.
http://static.nfl.com/static/content/public/image/rulebook/pdfs/11_2012_ForwardPass_BackPass_Fumble.pdf