legal formation (5 numbers 50-79, and three on back), WR A80's on the line between 7 and ten yards on the right of the tackle.
a-move back two feet (so is in on the back) and at the same time he's in a motion until snap
is it foul, because do not one second between he moves back and start the motion?
At start, he was on the line, so is he a lineman (with all restrictions)?