Completely agree with Anton and James that he did a selfish cowardly thing.
John confirmed that there was no pressure to go, he didn't feel bullied, it was his chpoice to go and that he didn;t want to be humiliated by being in a dance off.
Kristina, poor Kristina she was crying and he wouldn't even put his arm round her, was very brusque, "oh she's fine" and carried on talking about himself. Pompous git.