Few things:
1. The Saul and Hamlin meeting was basically Elliot offering Walt a job.
2. Gus wasn't looking for an alibi. He was worried things were spiraling out of his control, which is why he was obsessing over an extremely minor detail he
could control. Like Walt in "Fly".
3. The "man fukking a horse" line was in reference to Mesa Verde's logo. They briefly show it on a billboard directly after Saul talks to Acker. It's a man on a horse.
Mesa Verde Bank and Trust
Saul literally gave dude a pic of a man fukking a horse.
4. Can't help but think Mike is trying to die but don't want to commit suicide. I'm assuming this is the point in his character arc where Gus gives his life purpose.
Fred.