Solo Healing Twintania, is it possible?

[Nikraaa]

With 2.2 approaching I really wanted to try all BCoB solo heal before any nerf, so yesterday we went there with the following setup :
SCH PLD PLD BRD BRD MNK BLM SMN (twintania setup, on other bosses SMN was on his DRG, 2nd BRD is our WHM so the dps output was pretty low).
Turn 1 to 4 went pretty smoothly: 1st pull everything even if I had to use LB3 on turn 2 cause of tanks/me screwing up ( 1st time Healer LB was even useful to me)

Then Twintania... I've to admit That healing this boss alone was most likely the best healing experience so far. I was not expecting to kill it when we entered, and first pulls made me feel like I was right.
Phase 1 is really annoying even more when the scourges keep shooting at you or your main tank.
Phase 2 went way better than what I expected even conflagration on me + DS could be survived (our tank never enters conflags, just popping sentinel whenever I'm stunned). The most annoying part was when she was spamming on the same person fireballs and conflags.
Phase 3 was the real hell. 2 tanks getting a lot of damage, dodging divebombs in the same time, and trying to save cooldowns from the tank for the next phase. It's clearly the hardest phase IMO, even with only 1 stack on the snake tank it was hurting a lot.
Phase 4 went smoothly as I didn't get stunned, but I'm confident it would have been fine if I would have been stunned since we managed to save HG and sentinel.
Phase 5 is the same as usual with a lot of lustrates to spend when you are being targeted by fireballs (happened twice)

To conclude,after 6 tries (5 wipes 1 kill) she died, we got 3 or 4 times to phase 3, it is the critical point IMO.

PS: I will try to upload a video of turn 1-4 and see what I have on turn 5 (I've cut the recording because fraps takes too much space, I reactivated it for the last 5% sadly, I'll see when I get back home if I have the rest of the fight but it is really unlikely).

PS2: Lustrates save the day