This reset.
http://www.warcraftlogs.com/reports/...3903&spell=642
http://www.warcraftlogs.com/reports/...s&spell=147235
Can see that consata takes 2 ticks in the second link, then bubbles for the duration of the first link (don't know how to make them overlap on WCL yet, someone who's better with it than me might be able to), then takes one last tick towards the end. Zero explosions on the raid, zero ironstars spawned. It's more likely someone else fucked up when you used your immunity, rather than the immunity being at fault (after all, why on earth would deterrence work if bubble didn't?).
There's always the fact that you could just assign one of the two soakers to leave the other two when a clump check is imminent (happens every... 6-8 seconds? So max twice during the malice). 2x stack (malice+soaker), 1x at the edge of the ring, step out for a second when clump check finishes, step back in. I always thought that was how 10 man did it tbh.