What makes the honda odyssey pull to the left once I stepped off the accelerator pedal?

2000 honda odyssey ex; I noticed when accelerating, there is no problem. Issues arise when I let go the accelerator pedal, I noticed a slight jerk to the left. Its kind of annoying. I just had the auto transmission replaced and wheels aligned. Any ideas???What makes the honda odyssey pull to the left once I stepped off the accelerator pedal?have the trans shop recheck all the mounts