This question had a bounty, and the sign there says the bounty ended 35 minutes ago, but no on has the bounty yet, so I'm just wondering :
Did the Altruist manage to take back his bounty?
How did he do it?
I can explain what happened from my end of things.
I offered the bounty seven days ago. Some good new answers came in, particularly yours and @TimLymington's. After looking into the question some more myself, however, I realized I was unconvinced that these earlier references could be tied directly to our modern sense of cold feet. There seemed to be too long a gap with no mention of the phrase and also further evidence that the phrase developed its current meaning in the early 1800s.
So, I decided to let the bounty expire, thinking you would get half of it (25 points) for your interesting and highly-upvoted answer. I was unaware of the new delay in the bounty system and was confused by the points not having been awarded 12 hours after the bounty expired. Out of curiosity, I thought I'd see what would happen if I clicked the bounty for my own revised answer (and because I didn't really feel any of the new answers deserved the full bounty). At first it didn't seem to do anything, but it did make the +50 buttons disappear from the other answers. Now, though, I see that it seems to have awarded me back 10 points and made it look like I rescinded the bounty. I really didn't think this was possible, but I can't see a way to undo it.
Now, I'm curious if that will change after 24 hours pass. According to @waiwai's answer, half the bounty should go back to you at this point. If it does not, I think this may be a flaw in the bounty system that should be looked into.