That was my assumption as well. I personally never used the spot, it felt too cheap and I got bored just standing there as a healer. Not to mention you can't really pull that sort of thing off in any other dungeon in the game.
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Well you do this w/ chimera for one, never having to avoid Dragon's Voice and just let it go off by using elevation tricks. You can also do this w/ the first boss in cutters cry by kiting, although I'm not sure if the healing to boss by the marshall is stopped by elevation or just a max range. Either way thats just two examples of ways that are commonly used which are basically the same thing.