Tackle Eligible???

[stevesmith]

Tight end (uncovered) on left side end of the line. Prior to the snap, he comes off the line, goes in motion to the right, then resets next to the right tackle, with a receiver on the right side on end of the line so there are still 7 on the line. QB takes the snap, drops back throws a screen pass (forward) behind the line to the left to tackle #68 who turns around attempting to catch it and falls over backwards bobbling and dropping the ball. Ruling on the field was incomplete pass, next down. The announcer (Pat Haden) proceeded to tell us what a great play it would have been, it surely would have resulted in a touchdown had he caught the ball, then proceeded to explain how the "tackle eligible" is supposed to work when the tackle is left uncovered. No flags, and no mention of the 50-79 restriction!