Neither. You are committed to complete the six-month contract otherwise premature termination from your part would mean commitment to pay the 10k bond or part of it (or nothing, I suppose could be negotiated, it is not clear if it is pro-rated or not). I didn't face that eventuality because I completed my contract till the very last day.
On the "bond" agreement it is mentioned that it is applicable only for the first time you would work for JAF. Repetition of the contract in the future would not incur any bond (but again, that I couldn't know as I've only been with them once).
If it helps, everything that was their commitment (pay, days OFF, accommodation etc) was honored to the detail. They (JAF and Contractair) were very ok on everything, not only towards me but to other colleagues who were there at the same time.