The first part was like ~6 months back, the second part was eariler this week.
When I called him out for stalking my profile, he responded within the hour on a thread that was 10 days old. I didn't say his name, I just documented his actions on that single post and comment, going back to my account to downvote anything I agreed with.
He then said anytime I "said something stupid" he checks my account and goes over it to downvote me. I don't even do that and I dislike him. Check his modlog, it was one of the things he said before a mod removed it.
He also said (According to several other users) he will never forgive the "protest voters" so he'll fight them online.