Game Mechanics: Bind wound skill capped?

[Brussek]

My main is a 22 ogre warrior named Stinkor. For the last several levels, I have not been able to raise my bind wound past skill 100. I figured, meh, must be bad luck... until I visited a trainer, and he gave me the "we can't train you in that anymore" message.

Now, either I'm a moron and there's some temporary hard cap on bind wound that I don't know about, or my character is glitched for some reason. Any ideas?

The glitching thing does not necessarily preclude the moron statement, mind you.