I'm definitely not an authority either way, but here is someone's comments from another board I visit. It's a pretty unique take on offense.
the way it gets around the number rules is that its called a kick scrimmage formation - in which ALL 11 players are numbered 1-49 and 80-89.
This formation is legal on any down.
It requires 7 guys on the LOS and the end guys and backfield guys are eligible for a pass past the LOS. They must have one guy 7 yards deep in a position to take a snap - he does not have to receive the snap, just be a potential recipient of the snap.
Its like they are running a fake punt on every down.
EVERYONE is eligible for a reverse or pass behind the LOS
So the defense comes to the line not really knowing who the "blockers" and "ball carriers" are on a given play. That is where the confusion comes in.
On one play, #44 may be running a play as if he's a full back and the next play, he's a WR, then he's leading a sweep like an OG.
Same with any other guy on the field.
It forces a defense to get its big sloppy DLs off the field and play with 11 DBs and LBs who can run.