Brake release problem

[Catrin]

I admit it, I am too embarrased to take Ms. Plum Blossom (Gunnar) to the LBS and admit that I can't figure out how to do this At least the good women of TE can't see me blush. Also that would take all of my riding time tomorrow night and I would prefer to RIDE

On my ride yesterday, there was a lot of sound from my front tire that was probably related to all of the wet cr*p on the road. This was very obviously not from the wheel but from my tire so I wasn't worried about it - but planned on taking the wheel off after the ride and make certain my brake pad didn't have anything in it.

Except...I can't seem to release the brake. My LHT has cantilevers, while my Gunnar has long-pull V-brakes? There is a rubber thingie that looks like an accordion and am not quite sure how I go about releasing the brake - I've been looking for a video but so far haven't been successful. The brakes on the LHT may not be as good as on my Gunnar, but they are certainly easier to release!