[Update: New Bookmarklet Available]
To finish my rant started in my previous post, I've put together a simple proof of concept bookmarklet to remove the myPay virtual keyboard security facade. To use it, drag the below link to your bookmark bar (works on Firefox, Chrome, and Safari).
Go to https://mypay.dfas.mil and click the new bookmarklet. Your login dialog should remove the virtual keyboard and allow for a simple log in.
Just to be clear, this doesn't allow you to do anything that you couldn't already do- myPay allows you to do a simple login if your virtual keyboard login fails.