Hamza was talking to Kaye on her radio show this morning, and she asked him about him disappearing after the final. He said he went home to recharge his batteries and go off grid and have some quiet time, so it sounds like it was his choice not to do any press after the final.
He's also doing the Salsa and American Smooth Foxtrot on tour, so that's his showdance I'm guessing? His showdance jacket was on the clothes rail on the tour's stories, and this is a good opportunity for him to do his showdance without any mistakes.