It all looks very easy in the guides (especially the nice glossy 2nd one), but as dodgy says you have got to be a contortionist to get into the right position with your hands to remove it (or stand on your head!).
Plenty of patience is required to do it that's for sure... It took me a couple of attempts - it's not easy to get the FSR out either if it's the larger original type, the newer version slots in so much better.
Be careful un clipping the stepper motor for the ventilation flaps, it's quite easy to break the tabs off the mounting brackets (you can use cable ties to hold it in place if they do though!)
Thanks for that folks, i am very skinny and flexible lol, mines is staying on when the ignition is off and draining the battery so at the minute im removing the blowers fuse when not in use, nightmare !!