I did think it was a nice touch that he pushed Rory forward to take the solo. Finn's being really sweet to Rory, and I think that's a big step forward as far as his maturity goes :) that he's not just falling in with those other meatheads who were being so mean to Rory, like Finn might have done circa season one, you know?
Whether or not that was him being passive aggressive toward Blaine, I choose to see the best in this particular set of actions, especially since I'm spending so much energy condemning certain others lmao.