kh/onza crank problem

hey, i cracked my rim yesterday, and today when i sat down to switch my kh rim to koxx rim i didnt get off my left crank.
the right one came of easily, but the left one is stuck.

how can i get it of?

Were you using the self extracting bolts in the centre of the crank? With the extractor ring in place the crank should be pulled off as you undo the centre bolt. If the extractor ring isn’t there put the bolt back in and install an extractor ring, you can use the one form the other crank or buy a new one, and then un-dop the bolt again, it will pull straight off.

i had the extractor ring on, but when i had pulled it half way off, it stuck.

it just came off, dont worry.