What's the deal if you just got paid out earlier than you should have been?

I remember yesterday thinking 'these payments are coming back fast' and reinvesting (because they came back fast).

It was only much later on I saw I had been paid for one transaction BEFORE I SENT IT. I thought that was a little odd. I know this is an honest ponzi, but I didn't expect psychic.

So last time I looked, last night, I had two transactions in the unpaid part of the queue that I have actually been paid for already. I don't know where they are now or even if they are marked as paid.

I am away from home and can't get into my blockchain wallet till midnight, but when I do get home should I return these prematurely sent funds or will that mean they will no longer be paid when they do reach the end of the queue?