I have to wonder the same thing. Odin just popped on our server, and no melee could even target him because every SMN in the area did nothing but spam Shadow flare continuously for the entire fight. You can't turn off the graphics for that skill, and people were shouting at them to stop. Considering that they were laughing about it, and just kept spamming, it's pretty clear that they were doing it to antagonize people. We lost at 1%, since no one could build up a limit break.

How can you not consider that griefing?