Can i revert Razah back to Rt from Mesmer?

With the update yesterday, there was a option to change Razah hero to a mesmer profession instead of a ritualist. Is this permanent if i chose him as a mesmer or can i revert him back to ritualist anytime?

yes if you enter the hearth of abbadon after you have done the quest, then you will be able to speak to razah at the begin of the hearth of abbadon, so you can change his profession again.

source:
http://www.guildwiki.org/Razah

Ok thank you for answering my question. This is very good to hear since many people can take advantage of this without buying a mercenary hero.

On another note, can Razah be multiple professions on a single account? I.E. Paragon for my Paragon primary and ritualist for all others? I'd try it myself but my Paragon is the only character that has unlocked Razah (last weekend to boot!)
Thanks,
Mike.

I'm pretty confident that Razah's Profession is unique per-character because so are runes and equipment. Remember that runes and equipment on Razah are destroyed whenever you re-roll him to a different profession. The game warns you of this.