I managed to get two last night. A couple buddies and I tore through it without wipes. The biggest issue is you need 1 person DPSing the boss, and the other two need to clear the blights ASAP. Kill the blights, focus on any majors (captains, etc.) and kill those psions quickly (stormcaller!) We had moments where it was just the boss and the 3 of us could just unload on the boss without issue until another blight spawned.
I think most teams try to burn the boss down, but unless you can kill him in the first 20 seconds, you’re not going to be able to. By that time you have 2->4 blights open, and a crap load of psions to deal with and you easily get overwhelmed.