I'll help you with that answer. They can't. (or shouldn't) They can't be accurate to that degree with their system. (Unless one of the judges wrote that Stingrays got a 9.5000102 as their jump score. It would be really tough to write that in the little box they have.) The judges in that particular division also opted to ONLY use scores in .5 increments instead of every other division I saw using scores in .1 increments. If anything, that division should be reported to FEWER significant digits that the other ones. When the judges arbitrarily have to round their scores to the nearest half a point, you can't have placements decided by ten millionths of a point. That doesn't make sense statistically.
That is the either a flat-out error, or the result of rounding one of the 2/3 scores UP to .6666667 and another team having two 1/3 scores that are rounded DOWN to .3333333. If Haydens is worried about the fact that they should have been tied for 4th instead of getting 5th, then they should perhaps mention that to the powers that be.