While it's being said that on opposed rolls only the attacker can push, I'd allow it for Dodging and Parrying. That's one way to break one's weapons and shields.
Waiting for the official reply.
Does he gain a talent then?Attributes can be lowered with age. This normally doesn't happen very often but it can with the spell Weight of Ages (Death Magic). So if you character changes age group he will loose one attribute point.