I can only speculate, but I think he is motivated right now due to having fun playing again. The last comeback didn't go as planned and he was streaming his underperformance, whitch can't have been fun with the expectations people had. Now nobody expects much, but he's doing quite well. He played well in ECL and NAC2, and has taken the confidence with him into rated games. My guess is that if he keeps doing well and doesn't get burned out before the land finals, he will continue. But not getting burned out is easier said than done.