The money quote?
No bailouts, ever. Perhaps then management would not allow such practices as described in the article. Add a smidgen of personal liability for greater effect. Bankrupt the bastards who do this; take away the incentive.
One other thought: Put all bonus payments into an escrow account for a specified period - a few years perhaps - and limit monthly withdrawals to a reasonable amount of some thousands of dollars. If after the specified period the payment of the bonus has proven to be justified, turn it over to the receiver. Otherwise it is defaulted and returned to the employing entity. That might be an incentive to the traders to make good choices.