I don't have a video to back it up, however I've done exactly that during the last 50% of Ifrit HM at several occasions after a warrior tank would die during the AoE phase and not have a provoke to pull the boss back off me. It's truly not too difficult to pull off actually. The trick is really just having the rest of the group paying attention to their treat meters. It will not work if they just blindly keep spamming their threat up, as you're going to need to stop doing the tanking rotation prior to the eruption moments just to be sure you're not on GCD.
Doing so from the start most certainly shouldn't be impossible either, as you can normally build up initial aggro till the point of the first knockback he does. After that though the DPS needs to start checking their threat meters.
The entire needing to stop rotation to me is also the reason why I dislike the current way stunning works. It's a skill which should be taken off the GCD. Especially on one-time fights or first-time fights where you're unfamiliar with the timing, due to the GCD you simply can't do anything else in between without risking the entire group to die.