Agreed. In the beginning of the episode he was too worried about pushing the door open that said do not open unless emergency, but by the end after his little mid life crisis it's just a metaphor to show how much he's changed after landing the decent job, by pressing the button that says do not press.
the beginning of the episode is set post breaking bad, he is not pushing the door to avoid any interaction with the police because he can't afford it
The bit at the start was a flash-forward to his life after Breaking Bad... He didn't want to open emergency door because it clearly stated the police would be called as a result. Given he would be, I presume, a wanted felon, that is probably why he chose not to do so.
Very good second episode. I think this will be just as good as the first series.
or even better! enter stage left a young Gus building his empire and a cameo from Jessie. We can only hope!