It's been a few years since I've heard Sonny play live, but he isn't the kind of guy to tour and pick up a local (or regional even) rhythm section, So it'll be whoever's in the band currently, prolly Bob, Clifton Andersen, I can't remember the percussionist's name... when I heard him it was Michael Weiss on piano and Billy Kilson on drums, but Billy's been out with Chris Botti ( and that rhythm section ****in' KILLS), but I imagine if you check out reviews of earlier tour dates it will be the same personnel.
I had a similar experience hearing Jimmy Raney live, it sounds like nobody else in the band can swing, after hearing Sonny play. Everybody else's time feel sounds stiff (even if it's not, really. I heard Michael Weiss about a week later at Bradley's, and he was swinging his ass off.) and then there's the phenomenon with Sonny that I call "spinning your wheels". It's like he's playing stuff and sort of passing the time until inspiration really hits and then it can be some phenomenal **** and then it's back to "spinning" until the next inspirational moment. But he doesn't take the horn out of his mouth; he makes it work, I would sound like ****.