Yeah, I don't remember exactly but it wasn't particularly high speed.
Also remembered I had 4 x 19 rockets on. Went back to the same server with the same loadout and tried it again and I couldn't reproduce it, it seems okay now. Flew sideways quite a bit with no issues.
I guess we can close this one, I can't reproduce it. Maybe Friday's patch fixed it or something was weird in that session (possible, as the trk file from it is also bugged).
SMH's post in Did the rolling come back? was marked as the answer