wtf it won't even let me unblock him. Why is he blocked?
Discussion
He's blocked cos 5 or more people you follow have blocked him, can be for any reason those 5 people want to block him for.
You can only undo this by following him lol whether you want to or not.
In this case, it may be because it's a spamfilter doing it tho. Hard to tell. Sometimes it's the spamfilter, sometimes it's the autoblocking mechanism of 5+ people you follow blocking ¯\_(ツ)_/¯
That's so annoying, it's probably the spam filter since I don't follow many people and none of them are the type to block.