Anyone watching this one? Alabama tackled the MissSt RB in his own endzone...but he had run out of the endzone first. Refs gave them a Safety for 2, but I thought forward progress means it wouldn't be a safety...
Forward progress gets reestablished if the player starts moving forward again, and that is exactly what happened here.
So he got knocked back a little, ran backwards into his on endzone, started running forward (or more sideways) then got tackled.