Mike was absolutely right...Walt did fukk up a good thing with Gus. He could've worked like a typical 9 to 5er and make over 3 milli and die in peace...
but he just had to bring Jesse back in the game.
This is why I can't stand Jesse's ungrateful ass...Walt could've let him rot while he worked with Gus and Gale and count his millions instead he tried to put his homie on and now getting shytted on by that punk b*stard.
Yeah, he HAD to bring Jesse back because Jesse's punk ass was threatening to bankrupt Hank and dime Walt out to the DEA.
Even with all that said Walt didn't fukk up anything. Gus was looking to do away with Walt the entire time. Keep in mind Gus told the cartel he'd give them Walt once he finished up his contract.
Mike was just being a crying ass bytch. Like I said earlier if Mike had to blame anybody for the downfall of Gus' empire it was Jesse. Everything Walt did during that situation was for his own survival.
Walt brought in Jesse to keep his junkie ass quiet.
Walt had Gayle killed because Gus was looking to kill Walt and replace him with Gayle (who Walt had been unwittingly training).
Walt had to manipulate Jesse because Jesse turned on Walt just because Mike and Gus gave him a little pat on the back to keep his junkie ass in control.
Walt killed Gus' because Gus made it clear he was going to eventually kill Walt whenever Jesse "Came around"