Someone on Reddit posted this information, so I thought it'd be useful to everyone doing Ifrit EX. It can easily be solo healed now (or still two healers, just having them aware), with either healer running through Ifrit when he's casting the infernal howl. If you run though him, it'll interrupt his cast and you won't have to deal with that mechanic (since you can interrupt it every time he casts it by running through him). It allows one (or both) healers to stay in the center with the party the whole time.

As others in the thread stated, this will likely be the way it's healed in the future as there are no negatives (except that healers will need to dodge eruptions with everyone).

I'll gladly post the thread, but unsure if I'm able to link to the unofficial reddit on here.

Hope this helps everyone.