TOD

I can't imagine Tool releasing an album with a mistake on it, and would assume that what you are hearing is most likely an intentional polyrhythm or syncopation that you are not used to hearing. I have a pretty good ear when things sound "off" and have never heard anything of the sort with Tool. I haven't gone back to "analyze" this part of the song because I don't have Aenima handy, but maybe You should. Look up polyrhythms and syncopation on wiki and then give it another listen because when I listen to the song I groove with every hit and beat like it was forged in heaven for my listening pleasure.