Didn't he take Mike's gun from his bag before getting out of his own car initially? I think he went there planning to kill Mike once he got the names but couldn't actually bring himself to do it until he got angry.
I don't think he was planning on killing him, he just wanted the nine names but in the heat of the moment Heisenberg didn't accept Mike's words
Anyway, what an episode! The opening scene is fantastic and everything going to happen in the next episode is inviting. I think the next episode will have a mini ending so that the audience won't be put in wait so much.
So much shit happened. I liked first three episodes, later on it was bah. I loved Skyler and Walt before, but now they are just horrible. Now Mike dies? It's just fucking horrible, Walt is a moron, he's going on my nerves.