You're not bounced out of the queue. What is a bit misleading is that everyone is effectively in the queue, based on their oldest share since they were paid. When they cross their payment threshold, they become visible in the queue.
That's what happened, there are people who haven't been paid since before your last payment, so they are ahead of you in the queue. As you say, you will get paid, but the displayed estimates of how far you are from being paid are usually too optimistic.
Uggghhhh
I entered the payment que last night.
As of a few minutes ago I was in the que to be paid on this super long 6.5 hour block.
But when the luck counter went to 0% then rolled over to 900% without finding the block I also got knocked out of the que "Maintaining your 3 hour hashrate average, this will take at least another a few seconds at current network difficulty"
I know I'll eventually get the payout, but it is kind of disappointing to wait 24 hours for a payout and then get bounced out of the que.
