The vast majority of his time this year was with Benning, who is a better puckmover than anyone save Karlsson on last year's team. Benning also took the physical role and allowed Vlasic more room. Last year, Vlasic was shifted among several partners - mostly Meloche, Simek, and Merkley, who I guess could make up a mediocre AHL defensive corps.
Vlasic got more minutes (with Burns gone, there was no one else), and picked up a few more secondary assists - frankly, because of Benning. I suppose, in a way, that is a bounce back. It also doesn't represent anything positive about Vlasic himself - merely that, when paired with a 7D like Matt Benning, he manages to get back up to 7D status, which is where he's topped out for the last five years. He's not good, he wasn't good last year, he won't be good this year - if it wasn't for his contract, he'd have been out of the league three years ago, because he's a poor defensive player who is utterly hopeless offensively.
The Vlasic extension might be the worst contract in the entire NHL over the last five years, and we still have three more years of it.