^ Good points.
That all makes a great deal of sense, so I accept the conclusion that Lethean telepathic attacks can be tailored to different ends through conscious intent of the Lethean in question, and that it was indeed (as it appeared to be), the same form of attack. I prefer that to the idea that they're pulling new rabbits out of the same hat (which would undermine some of my pleasure at having the same hat brought back in the first place).
It's still a bit uncomfortable for me though; I remembered Bashir telling us that Lethean attacks are usually fatal, and it was at least implied that he survived through unusual force of will. When I first saw the episode, I thought "Oh, Kor's dead!" when the Lethean struck, and was a little peeved when it seemed "Lethean attack" had been defanged.