About 30 yrs. ago I was PAX on a DC9 on night approach to
KBOS 4R . About 2 miles out the cpt added some power, stopped descent, and rolled into an "unconventional" right turn at a few hundred feet altitude. I was enjoying the view of the harbor lights when he reversed the roll to line up on 33, whereupon we landed without further ado, although he wasn't "wings level" until over the numbers.
Seems that some traffic didn't clear 4R in time. The whole episode was rather fun for me, although we probably didn't reach 30º bank.