A man going on trial stabs three lawyers in a row, can you/should you deny him right to counsel?

I just saw this story on CNN: A man is going on trial for drug related crimes. A lawyer is appointed to his defense.

Lawyer #1: Man smuggles a pencil out of jail, stabs lawyer.

Lawyer #2: Man smuggles a pencil out of jail, stabs lawyer.

Lawyer #3: Man steals pen from lawyer, stabs lawyer.

Man is denied lawyer #4 leaving him to represent himself.

Man hospitalized for self-inflicted stab wound…(ok that part’s not true but that would be hilarious) Thoughts?