I have read that there are two modification of Tu-204. Old, where thrust reversal is not blocked and new, where thrust reversal can be used only when spoilers are already deployed. This was the new type.
In both ac you need to stop the lever at mechanical latch and wait for two green lights and after it continue moving the lever. They didn't follow this instruction.
Only speculation:
1. lack of deploying spoilers manually (After Pardubice discussion?), in consequence thrust reversal cannot be used
2. bad manipulation with levers sat forward thrust
Reportedly high speed landing was commonly used at RW, with initial breaking using thrust reversal.