Over on the PPRUNE forum the speculation is running along these lines: First, it was a crew transfer flight -- no passengers or baggage, so the plane was very lightweight and harder to "stick" on landing than a normal flight. There were (unconfirmed) reports that it bounced high on touchdown. If the thrust reversers were inhibited by a weight-on-wheels sensor during the bounce (a normal safety precaution to prevent accidental use in flight, but I'm not sure if that's how the Tu-204 works), then the reversers couldn't be used during the bounce. From the speed it hit the highway, it looked like the pilot might have attempted a late go-around, with (unconfirmed) reports that the crashed cockpit had the thrust levers in TOGA position. Brake failure might also be involved, but it wouldn't be needed if all the other holes lined up like that.