Friend and colleague has asked me to accompany to a disciplinary. He is very much of the opinion he is not in the wrong (lateness, sickness, hangovers) where as I actually think he has been very much in the wrong.
He has requested me to attend and participate (speak on his behalf at the beginning and end) but I don't really feel comfortable doing it knowing I disagree. Aibu? If not how do I explain to him without offending him?