What you described sounds like a neurological issue. Since we don't know what it is, I would be extremely careful.
Always deal with this snake last and your established collection first. Keep sanitary and don't use the same things for the boa as your other snakes (tongs, hooks, etc.).
It looks to be a normal BCI/Colombian Red Tail/Red Tail boa.
And if so, can you link us a video of the snake's behavior? I'm interested in seeing what you described.