I really hate that behaviour - when Jarv was a pup we were talking similarly to someone who was really over-exciting him so he jumped up at her - her response was to knee him in the chest, and tell me I should really be getting him under control and not be pussy-footing around him
Thing was she could have really hurt him...I too was just stunned and didn't say anything. Afterwards when I thought about it I was furious!
Unfortunately there are still some very antiquated outdated and downright cruel methods of gundog training out there - and you have encountered one of their fans.
Avoid him like the plague
and if it's any solace, I would be feeling exactly the same (can't say the bad words on a family forum
)