It seems that this week, people have forgotten how to do Flex 2 or something. Throughout the course of yesterday and today, I've gotten into eight separate groups for Flex 2, and all of them failed miserably on Galrakas.
Flex 1 and 3? Breezed through them, 1shotting everything. But I guess Galrakas ate his wheaties or something. Though it seems to be less the boss being hard, and more "half the raid ragequits after 1-2 wipes".