Not my favorite episode, mixture of "no forward movement of the plot" and I never cared for Shoot, mostly because I don't believe Shaw, with her personality disorder, would fully commit down the sappy path of "your memory is the only thing saving me."
I first started guessing something was wrong, when the boat appears when she escaped, but once she basically hit the easy button and found Greer inside 30 seconds, I knew something was completely off, to the point it had to either be a fakeout (like what we got) or some disastrous result from having a shorted season.
I don't think the USB stick means anything. Just a part of a simulation that it feels Shaw "understands." It flat out implied it was Shaw's idea to Greer to implant that stick. The episode almost seems like it was written by Shaw, where her Hammer approach was completely successful.