What's the problem with that? They were both pointing guns at each other and Inaho even said that he is his *enemy*. "2 much tragedy 4 u?"
Uhm... what the fuck? Why did he shoot Inaho? Clearly he was friends with the princess? This series went from a 9/10 to a 1/10 in a matter of minutes.
The question is, why did he rescue Saazbaum? What did he expect would happen?