It's called Diverting the Subject.
If you can't defend a point you've or someone else has made in an argument, make a different argument so you can try and make a strong, but irrelevant, point.
That's what it contributes to the debate.
The delightful thing about using this tactic and NOT having done any previous research, is someone could slap an uno reverse card down on the table and throw it back in your face.
The annoying thing about this particular subject diversion is that, not to make the pun, it's a very subjective question! Who am I, to say if a play should have resulted in a suspension? I'm not an expert in the NHL rule book. I don't work for DOPS. I'm not a ref. I have literally no background in any of these fields whatsoever.
If I were to engage in this subject diversion, I would only open myself up to critique. "Well, that's not actually a suspend-able play" or, "what about this one that you missed, hmm? nice bias you got there!".
When someone tries to pull this tactic on you, it's best to refer back to the original, core argument, and make light of their attempt.