If you can find the regulation in the Oregon laws, I'd believe you.
I would bet that the case you're thinking of was an illegal partial reversal. The entire deposit may be recalled - it's all or nothing.
http://www.businessmanagementdaily.com/30999/may-is-direct-deposit-month
Fixing other errors is more complicated, however. These errors are called reversals because they require you to ask your bank to reverse the electronic transaction. Reversals can occur when an employee is terminated after the direct deposit file is sent to the bank, and state law mandates immediate payment of final pay. Reversals may also be necessary if an incorrect amount or duplicate amount was deposited.
These rules apply to reversals:
Reversals must be originated within five banking days of the settlement of the original (and erroneous) settlement and within 24 hours of when the error was discovered. Employees must generally be notified of a reversal.
If employees have already withdrawn their funds, their banks don’t have to comply with reversal requests. It now becomes more cumbersome to get your money back. You might, for example, have to sue employees.
If the mistake is an overpayment or underpayment of wages, don’t ask for a partial reversal. Partial reversals don’t comply with NACHA rules. In addition, reversals must comply with state wage-payment laws.
Many states (Oregon, for example) consider a partial reversal to be an illegal deduction from wages. You must reverse the whole transaction and start again.