I'm not sure how the confirm page got this way but there is a PayPal Express Checkout server behavior on the page. This is the code that is sending you to PayPal rather than reviewing the details of the transaction before you confirm it.
On your confirm.asp page delete the code that is on lines 6-69. This should stop it from going to PayPal allow you to review the details of the transaction before confirming it. After you confirm it the transaction should occur and send the user to either the success or failure page depending on the status.