Mafia 54. This is where caravans are robbed!

If we follow this logic, then Spear would have round ears and be subservient, meaning a guaranteed peaceful outcome.

Guaranteed isn't necessarily the case, as the emperor only checked one status. But considering the evidence, it makes perfect sense for Gur. If the emperor was comparing subservience, then Gur could very well be a spy or a partisan. For now, execute Gur.