I think he'll be much better than he's been thus far. I too read that article and found it interesting. There may be something to that minute study, the author did on Felix. But, Felix is young, and will probably be inconsistent as most young pitchers are.
I just traded him and Prince for Burrell and Cliff Lee, I had enough of hoping he'll turn it around. Plus there are still concerns about Seattle shutting him down in September, cuz they don't want him to pitch too many innings.