Although I do wonder why he decided to suppress Miss M's telepathy if he thought she was trying to save Kaldur.
Again, villainous impulses overriding compassionate ones. He didn't trust Miss M when he couldn't watch her, so he shut off her telepathy as a precaution. Leaving her powers enabled so she could keep helping Kaldur would've required trust, and that's not part of the supervillain mindset.
Actually he suppressed Miss M's telepathy before the camera was taken out, hence why she took out the camera so she could explain things to Cheshire without Deathstroke watching.