I figured that’s what they were when the first one was used. Even though I expected them to return, when they returned was still a surprise.
Seems to me that the storm was responsible for the demise of the bank, not The Doctor.
[fanwank warning]
At some point prior to this episode, The Doctor heard that the Most Secure Bank in the Universe had gone silent, went to investigate, and found that the planet’s surface had been decimated by a storm. He then tracked down the adminstrator and gave her his number, telling her to call him if he had any regrets. This is why he knew had to go on this adventure when she called.
But then he wouldn’t have needed to give her his number now, because he’ll do it later. Moffat was trying to close the loop, but it just felt hamhanded and nonsensical.
But why? How would the Doctor have known about the Teller creatures then?
And didn’t the memory worms just wipe out the last 24-48 hours or something? Everyone seemed to remember who they were, just not how they got there or why.