How many Sensei would do something like that for a student, especially a gaijin? I always thought of Saito-sensei as not only my mentor and teacher, but also as my friend which he really was. I cannot express in words how much I miss him.
Seems like a pretty normal act of kindness to me.
Why should it be surprising? Shouldn't that be the norm and not the exception?
And for those situations where it is not the norm - why isn't it, and why ought behavior be expected to be different just because they happen to be good at a martial art?
Would you apply the same standard to apply to the local high school teacher or college professor?