Dude, stick an allen key in the hole, and pry one side out so it moves up a little, than move the allen key to the other side and pry that side up, repeat till its out. If there really stuck in there, spray windex on the bearings and let it soak for like 5 minutes than try to get them out and they should pop right up (my friend used to do this all the time on his skateboard wheels), you might wanna clean your bearings and reoil them after that though.