FWIW, a supercharged axle spins no faster than an NA axle. Especially since the driverside is the same axle, X miles per hour still moves the axle ast the same speed though. If you didn't get nails in the tires, I doubt one hit your axle boot. The boots flex a lot and can develop issues. Which is why a new one was so cheap.

On the way you swapped the axle, you need an alignment now. Yes there is a how to swap an axle thread.