Still no blog, but there's an article about him today in the Hamburger Abendblatt:
He was quite upset at the end of last year and completely switched off for a few weeks, literally, he spent all that time without a cell phone. It sounds like he had some private issues to sort out.
About his wrist: he was able to play without pain last week for the first time. The joint isn't completely the same yet, but the wrist isn't a problem anymore.
The Australian season was just practice time for him and he considers that his season is starting now.
He has big goals for 2010 and has made a few changes in his preparation in order to achieve them. He is still coached by his parents, but his condition training is much more intensive now (up to 40 km a day on bike), he is more powerful too and it already shows on the court, his serve and his groundstrokes are a few km/h faster.
He's also adjusted his diet, vegetable and fruit instead of fast food. He's gained 2 kg (90 kg!), but his body fat index already is much better, he feels fitter.
He lost 6-4 6-3 to Kukushkin.