After rewatching the video a few times, I'm pretty sure this is what Misha said:
"Hi! I - um, I'm just rehydrating right now, but, my ... [shoe]..(shows broken shoe with toes sticking out) [I need to] get a new pair... and uh, I just want to say thank you for supporting Random Acts, and to everyone at home for all their projects. Heres to a great year, I just want to thank you guys *coughs* Bye :)"
parts in brackets are what I assumed he said since the camera was not on his face :3 hope that helps! It is basically just what Misha ended up tweeting anyway ;)