Still need to go through the whole RR vs RR schenanigan. . .and who gets cancel channeling as a 1st level spell?
My problem with the Absolution = injury explaination, which means the spell first permenantly injures you by tearing out your soul, then heals you later by restoring it at the end of the duration, is that if you chose to define it that way. . . .referring back to the rule above on cancels. . . .is that during the seperated soul and body duration, the evil cleric says "Fine, I cancel it". . . .and now you're dead. . .or at least, the soul will not be coming back, since the second half effect hasn't gone off. . . .I prefer to think of the soul removal as the only effect, that since you're not dead, your soul naturally wants to return to the body, so as soon as the effect wears off you snap back. . .
The fact that it's "Soul moved out to wherever"-"duration"-"Soul returns". . . .means that your empty vessel body is laying there with a detectable, ongoing channeling effect on it. . .when the effect expires, your soul returns.
GM can make the call that a cancel channeling won't work, and require one of the curse removing spells, or not allow that either and require lifegiving, but I don't see any rules reason why cancel channeling wouldn't work.