I just watched the Exeter/Benetton highlights. That final penalty to Exeter, I can't make it out. Tackle made by B23, he rolls out pretty much immediately, B player right over the ball, two E players join almost immediately to attempt to clean him out with E5 not "joining from the direction of his own tryline" as the law dictates for players joining a tackle, but from the side. Ref gives the penalty to E with the explanation "going/rolling the wrong way". Now what in the hells does that mean?
The only cause I can see for a penalty is that a ruck may have been formed and the jackler needs to let go, but that's not what the ref says. Is he talking about the tackler "rolling the wrong way"? If so that would be the first time I've ever heard of someone penalized for rolling the "wrong way". There is nothing more the tackler could have done in that situation.
Also, why is the player (E5) clearly joining the tackle from the side right in front of the ref ignored?
How do you guys call this? Minute 9:19 in the video. Remember, this is a match deciding penalty and there are question marks galore.