on that 2second "he was down" bit
the ref ruled that he "gave himself"up" when he sat down, thus was inbounds before he rolled over backwards out of bounds(sort of like when a QB slides- the qb does not have to be touched and the play is dead).
also... according to the rules a player going out of bounds to stop the clock cannot go out of bounds while moving away from "his" goal line to stop the clock(ie has to be moving "forward" towards the goal).
so- he catch the ball on his feet, take a step forward and oob= stopped clock
he catch the ball on his feet and gets hit and goes out trying to go forward= stopped clock
he catches the ball, sits down and does a backwards somersault- moving "backwards" from where he caught the ball = no stopped clock- he went out of bounds a ~foot "behind" where he caught it.
if you watched the summary on nfl.com, both dion and faulk? said when they showed that play- you cannot be moving backwards to go out of bounds there.