I'll grant that it's a bit of a stretch, but...
if the hypothetical Monk Gone BadTM created dummy monk id's and used their neutral votes to discover reps of victim's posts, the Monk Gone BadTM could then apply his/her real votes to selectively -- nodes.
This isn't something I've thought through or analyzed, so if there are holes in the logic, feel free to bring them to light. On the other hand, I hesitate to publicly discuss such stuff, to avoid giving anyone bad ideas.
Update : a number of fine Monks have pointed out why this is highly unlikely, and I have no reason to doubt them. Not the first ybiC-brain-hiccup, certainly not the last.   ;^)