yes it does. knee down, call time out.
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I guess depends on when the ref calls it. I know in college, if you're down, the play is called dead regardless if there's defender contact or not. In the NFL you typically have to be down by contact. I think there might be a rule that if you "give yourself up" the ref could blow it dead but could make argument that he was still rolling prior to the defender made contact and who knows maybe could have taken two seconds?
Anyways, still not really sure why they played such soft coverage on that play.
Looking forward to the Rams giving Saints their first lost of the year.