It can´t be hard to lose weight but he doesn´t want that. The only time he did it was back in late 2000 when he was filming "Exit Wounds" and Joel Silver forced him to lose lots of weight, otherwise he wouldn´t have got the role for his Warner Bros. comeback.
You know, from that pic, Steven is getting much bigger. It's weird, cos at the end of last year / earlier this year he looked in some photos to be getting slimmer somewhat. I imagine it's one of the reasons he doesn't get offered any film roles now sadly because what can he do other than stand or sit? It makes me sad and angry at the same time, but I guess he's just not bothered anymore. From that video clip he seems happy enough, and the ponytail is back
He had a serious weight problem even in his Warner days. He was already overweighted in "Under Siege 2" and "The Glimmer Man". I don´t know why it´s so hard for him to Keep his weight down, even back in the mid 90´s.
He did it in fall 2000 for the shooting of "Exit Wounds" because producer Joel Silver forced him to do that, otherwise he could forget his Warner comeback, Silver told him.