Originally Posted by
mander
I don't understand how the chain doesn't have enough slack to remove with the tire flattened. My guess is that you are making a simple and easily corrected n00b error, namely trying to lift the chain up and off the cog all at once. The way to do it is to derail a link or two off the top of the chainring (in front) then rotate the cranks forward to get the whole thing off.