Not rly. We'll just need to (while keeping SW:P and VT on target) apply DP and then toss ~2 Mind Flays and then continue with our normal rotation.
And, I might be wrong, but this doesn't seem like a burst to me, more like a periodic Mind Flay buff, which is, well, kinda cheap.
For the sake of argument, lets assume that we keep SW:P and VT at all times on boss, and, also, that we can squeeze 2 full Mind Flays into 1 DP duration.
Let's also assume we're using ToF and not DI as our talent to keep it simple.
In normal part of the fight, we get 1 Orb every 8 seconds, meaning, we get a third orb 17.5 seconds into fight, and then cast DP, which invokes GCD. After that we cast 2 Insanity Mind Flays and the process is done 24 seconds into the fight. Now, if I'm not wrong, we get 2 Insanity Mind Flays per 24 seconds, and if we assume that the Insanity also doubles Spell Power scaling from 50% to 100% (
Mind Flay), and that one Mind Flay tick does 12k damage, we get a damage increase of 2 * 3 * 12k = 72k more damage over 24 seconds, which is a 3k DPS increase.
Unless I interpreted something wrong, this seems like a cheap trick from Blizzard. If I have interpreted something wrong and this talent actually proves much better, I apologize in advance.