Not me finding out that I've been living under a rock, because I only just found out recently that I Will Be had a music video and a proper single release in North America (while Run was released in Europe).
Also, do you think that a third Spirit single between BIT/FPIS and Forgive Me would have been good idea or would it be too jampacked?
I imagine the thinking was that the album had sold so much so quickly, that if they put out another single from it it wouldn't have charted particularly well. I suspect the only reason the second single was for Sport Relief was to give people an extra reason to buy it.