During the time between blocks, each node builds up their own picture of what the whole network will look like. Different nodes will have slightly different pictures due to different connections and connectivity (assume the overall network condition isn't so bad as to have radically different pictures). But even with slight differences, the die rolls are still likely to land in the same accounts in 4). (picture a [0,1) line segment broken up into many separate account stakes. Assume no super-big stakes. If you remove some of them and insert some others, while maintaining stake ratios, the picture doesn't change by much (math can provide bounds)). So all nodes can achieve consensus.