I don't think I've ever seen this, but IMO it's the next "thing" the young creative minds in the game will be doing soon.
With offense the way it is, just take the 5 yard penalty and save the timeout, unless you're right on the goal line or something similar. 90% of the time you are better off just taking the penalty, so that if you are down 2 scores late you always have a chance to come back.