i also have the warrior and turned it 'round. i know that problem especially if you ride blind. but after turning 'round and tightened the strap as much as possible, i never had this problem again.
hope to could help.

Mine came undone a few times when new, after a few sessions, it started to soften a bit and now doesn't come undone at all now. Make sure you feed the web strap through the spreader bar, and tighten hard so you dont lose kite, harness and all. When tightening, wriggle the main strap up and down while pulling...it gets it a little tighter.
Wait until you start to get the Warrior Scars on your hips....at least you know it stays where it is suppose to.... Harness Rocks

Thanks everyone,
I,ve removed the clip, problem solved (at least i know my QR works when needed)

Are the 08 the same? I havent seen 07 up close, but the 08 one I got has a buckle.

Don't strap to the spreader bar, like the others said just reverse the buckle. I did it the day I got it and have never had any drama's.

i here the 08 harness , doesnt come with the knife , as it is now a an on.

wht a joke - a classic case of a company after extra margins ; shame on you

Early 08 came with knife but now they just got the pocket, with no knife. pathetic huh. I still got get how this buckle comes off? Maybe it doesnt happen iwth 08's?