That's just him enforcing the rules against a cheating novice.
I don't know whether he'd be honourable when hunting humans. Dachande actually respects humans, esp Machiko. Not sure how Topknot thinks, but IIRC, he views Machiko as a nuisance to get rid of. He strikes me as a more brutal character than Dachande
Also, in Hunter's Planet, Shorty becomes Clan Leader and is quite the douche.
In War, he's a douche as well, but he's just a student. War and Hunter's Planet are alternate sequels. Shorty dies in different qays in the two books