The exact same thing happened to me with one of the plastic connectors snapping. I fixed that with a climbing carabiner (not ideal as the large chunk of metal digs into the shoulder and is likely to damage the body). Then a few months later, another of the plastic connectors snapped 3 days before I'm due to play a gig, leaving me with only my back up strap to use, which is too long for my liking.
The annoying thing is, I actually ordered the Comfort Strapp from their website, but they sent me their own version. However, having complained to them, they did send me free set of Warwick strap locks, which was nice.