How exactly are they a 'bandwagon' team?
You're not a bandwagon fan. That's the wrong term because as you say, they aren't winning anything. But there's a chance you are breaking a fan rule. I'm going back and forth.
Not unless they move or get contracted. If you move you can pick up a team as a sub-team but you have to rep your primary team til the day you die. Sorry bro, that's just the way it is.
There can be other reasons besides moving. If you hate Michael Vick you can stop being an Eagles fan. If you don't hate black people you can stop being a Clippers fan. Basically if the owner of the team does some super shitty things or there are players that are really bad people that you can't stand to root for, then you can also stop rooting for the team. Also, it depends on how deep your fandom was growing up. If you were a casual fan of the local team growing up but then after you moved you started getting into the sport more, you don't have to stick to your original team.
So no one can ever switch teams? Regardless of how shitty the team is or how fucked the management is? Fuck that rule.
Sorry, ober. You're not allowed to switch teams just because the old one sucked and you moved closer to another one. Fucked up management is a maybe, though, but they'd have to be more than just not good at what they do. I'm not sure that applies to the Orioles.