maybe take an xacto knife, cut the strands, then hit it with the vacuum cleaner
This could work, or maybe a pin to gently pull up the hairs.
However, I'm going to suggest if you try it: exercise the utmost caution and care possible not to scratch the axle or wheel.
I had a similar problem with a vacuum cleaner constantly wrapping hair and cotton threads around the brush wheel - I mindlessly cut the threads away and eventually realized the build up was happening much faster because scratches on the wheel were catching even more fibers and threads. Got a new brush attachment and the problem was alleviated somewhat, it takes longer for threads to build up on the new brush vs the old one.