try check the mystic website and send them some info on whats happening they might give you a refund or maybe the version that doesn't unclip (If there is one)
if you don't get any feedback try going to a store that retails mystic harnesses.

I've seen this happen to a kiter down at mullaz, the kiter handled it pretty well
and clipped it back in, then asked me to give it a try (cause i was the only person on the beach with the same waist line)
Didn't give it a go cause i had just had a kitemare followed by a 1.5k walk up the beach

liam

Skimnur,

You have an early version of the clicker bar, this was subject to a global recall and has been replaced with an updated version. Go to your retailer and they should provide an updated bar + locking mechanism for free.

I had the same problem, the new one hasn't released once in the last 4 months.

Only issue with the new one it's now so tight I can't release it after a cold session, not enough strength in cold fingers so I release the webbing. Yes - I've been told to HTFU many times!

Rich