If you're really adamant on pushing the phase...

1) BLMs positioning is off. He/she should not of been running in like that. The BLM should of been pre-positioned to be in casting range as soon as the hit goes off and should've made use of Aetherial Manipulation if they wanted to be in position for the AOE buster.

2) There's a very high possibility (hard to see from the camera angle) that you never got the Rear positional on the CT/WT. It looked like you're in the middle, closer to the front of the boss.

3) If your ninja is really adamant on using Shasta's opener, the Shadewalker will have to be casted literally just before the tank runs in, the Suiton Ninjitsus should be timed to be used "on the run" and Suiton + Spinning Edge should be used as soon as the pull happens, exactly like how you started with the Spineshatter Dive. I'd recommend your ninja to open up with Spinning Edge -> Shadow Fang -> Mutilate, as with a Ninjas 2.05 GCD, he/she should be able to get all those abilities in fairly quickly.

http://www.fflogs.com/reports/tLGCx9...vents&source=9

This is a perfect example of a Ninja opening for A5S.

4) Your entire groups positioning is off. The MT should of been where the Warrior was standing (Against the wall) and the Warrior should be on the Left or Right side of the Boss. When the Tank/AoE buster comes, he/she has more than ample time to stack with the rest of the party. If you do get the Tank Buster on the OT Swap, then holmgang should be used here to soak the damage and mitigate the knock-back.

Not only that, if you're dead serious on skipping the phase, your group should be pre-positioned on the right side of the arena, rather than the left, as that's where you need to move Ratfinx anyway for the two Cobras. Less movement = more DPS uptime.

It also looked like your Bard completely missed the Battle Litany from where he/she was standing. It's kinda evident they were standing too far back; they never made it in time for the AoE Buster (same for your Scholar) hence why your group took so much damage.

5) Lock On. You "missed" so many Auto-Attacks... You should get used to strafing, or using Lock-On.

http://www.fflogs.com/reports/compar...lity=7&phase=1

Take a look at this comparison, as an example. In the same Window (Ending Phase 1/Prey), despite your phase being 11s longer, Dervy still managed to get the exact same amount of Auto's in. You missed out on 4-5 Auto's not facing the boss properly. A lot of people have trouble with this. Get used to Lock-On if you really want to do serious DPS, or learn to adjust your character properly to always face your target.