Claiming an unfounded dispute or transferring funds to a new company is fraud and you'll probably end up with both AWS and your bank coming after you for collections. With $80k on the line, its enough to file legal claims.
The best plan is to negotiate directly with AWS and ask for forgiveness and a payment plan. Do not try to run away from your financial obligations or you will make it far worse.
EDIT: you've rewritten your comment so this doesn't apply, but please don't recommend that people avoid their debts.