Use H IDC P TTT for Titan EX. That's how much of an in pact this rotation makes over any other rotation. Pretty much, if you start your rotation from the beginning at each jump, a plume will come each time you're transitioning from Disembowl -> Chaos Thrust. That rotation honestly makes piss-work of Titan EX rotation. I know exactly what's about to come just from what ability I'm about to use.

Start with Spineshatter, straight into H IDC P TTT burst, and throw DFD at the end of your bursts. HT + BFB should still be up, maybe IR as well if you're fast enough.

When the set's of bombs come where it covers up 3/4 of the map, you can land 3 extra hits in before you have to run to your group to evade landslides. If you're using the above rotation, you should always be starting with Impulse Drive as soon as the bombs land; So second you've finished with Chaos Thrust, run back to the party.

Post-Heart, all of your cooldowns should be up straight up. So throw up the burst, once you've ended with Plebotomize, progress straight onto the adds, splitting your DPS.

I don't know if others have observed this strange pattern with this Rotation and Titan EX, but every kill I've done, it's just a repeat of this.