I was following that match and watch the tiebreak, and I was surprised Dodig won it but it didn't seem that suspicious to me - but then I wasn't paying any attention to the betting patterns.
What raised attention:
1) Move to Dodig beforehand. Nothing massive though - for a proper fix, see one of the Canas specials (ie he's a set up, and the opponent is 1.2). I think Dodig's SP was 2.7ish at pinnacle.
2) Huge trading volumes for a 1st round at a 250 between two lower lev players. This happens a lot when Russians are involved, sometimes to dodgy ends, but usually not.
I saw nothing inplay that looked like a fix though. Korolev was being a moron, but that's routine for him. He actually went for an ace in the tiebreak too, thought he had it but was called let - not the behaviour of someone trying to lose.