Could be a coincidence, could be how it was programmed to work. My first instinct would be to think that DT'ing a player WOULD allow for more tip-ins, offensive rebounds, etc. simply because there is now a player unaccounted for by the defense. It would seem to be even more likely if the player being DT'ed were a guard, since that would tend to pull two defenders farther away from the rim (for the most part). However, if it happened three straight times, my guess is that it's more than just a coincidence.