Yes the bank was positve, but erratic, as the plane did its circling descent, until about 20 seconds from impact, when the plane then flew straight to impact.
The bump in the pitch graph at 5 seconds suggests the pilot had caught sight of the VDOT antenna tower and eased the control column to ensure he cleared it, then pushed forward again, overdoing it and having to pull back to avoid hitting the ground before impact.
The maximum bank of 6 degrees, very brief, during the last few seconds, rules out any possible deviation round the service station, if the FDR data is to be believed, and I see no reason to doubt it.