Thanks for all the feedback. I think in this instance someone wanted the bike and they really didn't think twice. I hope I can post the video to show you just how effectively the lock was defeated, and I'm sure you can see from the tool marks it was something 'professional' that was used:



The next steps are a cheap bike for the commute, replace the Cronus and chalk this one down to bad luck and (in)experience.

I'll post the video if I can.

Jon

(edited to change easy to effectively and a few other grammatical quirks)