As annoying as that is, at least they move over to go past you.
I too have wondered about some of them going into the bike lane, as though they were trying to send me a "message". Who knows, maybe they were. Then again, people do the same exact thing to me when I'm driving, pass me, then jig over into the bike lane for a bit. I suppose, (outside of dangerous acts) it's better for your state of mind if you give them the benefit of the doubt, "Meh, silly humans." And then you go on your way.
