You can't, because I enforce this in my code. There will be a line somewhere:
if(!$my->id) {
mosNotAuth();
}

Because only users which are logged in and have enrolled for the event are supposed to see this site anyway. Reason being, it hosts the PayPAl button which can only be valid when you are logged in, otherwise the ItemNumber cannot be generated and when the payment arrives, my script would not know which user it is for.

If you are not using PayPal, this page does not show anything that the "Payment Instructions" on the detail page would not already show anyway.