You look at the tackle, Marty actually made contact with the head 2 feet from the ground. Marty's eyes were facing left, and he was wrapping up the player (Bird), who was both twisting, and free falling.
They need to contest it hard. Like others have said - 0 weeks for mine.
Even Warren Smith, who death rides us at every turn, was making excuses for it.
Heck, does anyone notice when the penalty count is in our favour, the commentators go on, and on, and on about it - but if it's heavily against us, it's standard.