Can these be fixed, track-side , if the airbag deploys ? and how expensive is replacing those pressurized cartridges?
This is a good topic. Most riders gear their bikes with an eye to salvage a weekend in the event of a minor spill. ( premium bodywork , frame sliders , clip ons , case savers, popular rearsets and so on - even buy popular bikes for the availability of spare parts..) . It beats the purpose, to have an airbag suit which deploys in a minor spill and cannot be fixed track-side. You then have a suit that's vulnerable, even though it's usable, to make it through the weekend.
I haven't much knowledge on how to replace the pressurized cartridges , so take this with a grain of salt. (perhaps, it can be done inexpensively / easily).