Hanging on/contact goal tech?

[Refk]

This year I was watching my son play a college game and he went to block a shot (close to the rim) , missed the block and then grabbed the rim to keep from landing on a player. I was waiting for some sort of whistle but nothing happened. He hung on the rim until it cleared up a bit below then let go. I asked him after the game what happened and he said "I was just protecting myself" , I asked him what the official said to him (next dead ball the official was talking with him) and he said that it wasn't a T because the official felt he was protecting himself. I'm not really sure what the rule is but it made sense to me.

Just my 2 cents.

Refk