I find this whole situation unreal as well as unacceptable.
I would expect all dojos to have, as I have, a set of rules, I make sure students read the rules on the day they join. I then ask if they have any questions so there are no excuses later.
This guy would not last one class with me.
Henry Ellis
Co-author of `Positive Aikido`
http://aikido-bracknell.blogspot.com/