Fixed mine with a console command easily enough. Open console, click on follower, and type in " tc " without the quotation marks. It should say something like "ToggleControlsDriven - actor movement is now controls driven". Close the console, then press block key (right mouse default). The follower will probably bash with shield or weapon, and then the follower should go back to normal. Open console and type in the same " tc " command to give the follower ai controls again.