The only thing that Stu and co could possibly do to earn back...

The only thing that Stu and co could possibly do to earn back any degree of trust from shareholders is for them all to:
- sign full confessions detailing their involvement in this debacle
- return all of the money they've wasted on extravagant office fit-outs, luxury cars, travel, etc.
- wind up the companies
- send a hand-written apology to shareholders accompanied by a cheque

Even then, trusting them would still be a stretch.