Damnit. I just spent about three hours worrying over a discrepancy in my future prediction mechanism. It turns out that it was occuring because I was being disabled by
GrubbmGrb. His shot intercepted me before I could move, but rather than just killing me my bot would decelerate toward 0.0.
GrubbmGrb likes to ram disabled opponents, so he shoots to disable rather than obliterate. -expletives omitted-. - Martin