I've tried to find this on the official NFL website and can't as yet find anything on this.

Heres the play - https://cust9.myfootballnow.com/gamecenter/view/2937#568739

Originally I thought the ball had to cross the line of scrimmage to be ruled as incomplete, (my mind on rules these days isn't what it used to be).
I know for it to be ruled a fumbled pass, the ball has to be ruled as travelling laterally or behind the LOS.

\Thought?

here is rule book from NFL

NFL Rules Digest : summary = http://www.nfl.com/rulebook/penaltysummaries
NFL Rules Digest of Rules = http://www.nfl.com/rulebook/digestofrules

anyway I don't think there should be a penalty because as long as there is a receiver in the area the ball goes thrown there shouldn't be a penalty.

So I would say it should be a incomplete pass until further notice or someone can prove to me I am wrong.

If the ball is moving foward from qb to reciever it is a pass. Anything else would be a fumble or live ball just like on a screen when the qb throws the ball slighty backward and short in the dirt it would be a fumble. This play the pass was slightly foward making it an incomplete pass.

Like a pitch for a RB is a fumble yet a swing pass to him, if properly executed, is an in complete pass. Both are quick out side plays to the back yet one is a fumble and the other an in complete. All decided by the path of the ball. Like a shovel pass, under handed pitch going foward that is really a pass.

Simpler said all foward passing is done behind the line and the passes are counted as incompletes where backward passing or lateraling is allowed at any time but incompletes here are counted as fumbles.

Cheers Fellas kind of what I thought