I really enjoyed this episode actually, it had a lot of heart-felt moments towards Soph. I can understand that after seeing his friends do all this stuff, and go to the trouble of wanting to throw a party and what not, that it'd be hard to tell them right away "SO guys I just found out I'm not actually moving, i was wrong" if you suffer from a sort of anxiety like Soph clearly does. Really happy that Grubbin's line made it into the main cast without being under Ash's control, personally I didn't want it on his team but it wouldn't have been a bad thing either!
The cutest scene was when Togedemaru was crying and all the pokemon looked so worried, especially Steenee, so cute.