I don't quite get why The Flash came back to HQ with the rest of the team after they realized the bar was a setup. "Hmm, cunning bad guy lured us out here for some reason away from the person he's realy after. Hey, you guys got room to give me a ride back?"
Even if you assume the shit at HQ went down at the same time as the stuff at the bar, and not immediately after like it showed, he still shoulda been trying to get back.
Oh and I was disappointed that they didn't follow up on whatever magical powers the boomerang from the flash episode was supposed to have. It was 3d printed, so why was it vibrating? Why did it fly off on it's own?