"Enjoy 1 FPS"

This happened twice today, same guy in two different BGs. During an EotS match that was going relatively poorly, we had a warlock start to spout abuse before saying "Enjoy 1 FPS". True to his word, the entire raid groups fps dropped to unplayable levels, it appeared to be due to some sort of macro or script rapidly changing players positions within the raid group.

Is this a relatively new occurance? Is it reportable/bannable?