ps2 controller into camera keeps spinning

You can try x360ce - X360 gamepad emulator. It works really well, with some exceptions, like Dead Island - it made it go ~10FPS. Anyway, it should even have key binding for your controller in online database. I had "spinning" camera problems in some games, like Batman Arkham Asylum or Borderlands 2 (I left the controller unplugged by mistake and the camera went insane)

And always remember to leave analogue sticks in neutral position when plugging the controller in, but it's probably not the problem here.