Could you explain to me who you think is processing reimbursements when AR/AP seems to have all quit? Ditto for company cards--most company cards I've had have fallback personal obligations if the company refuses to pay for a charge. What assurances do any of these people have that they won't be stuck with the check?
A Twitter developer can get a "6-figure job" just about anywhere pretty quickly, and many can get ones that haven't just gutted their total comp by going private. What's the point, exactly?
a) will be using Twitter expenses to fly (company credit card or reimbursed)
b) may keep their 6-figure jobs.