Anthony,
I was looking through the EVB layout images, but it got a bit confusing due to all the large pours for power and signal nets. However, I believe I have implemented the intended isolation between AGND and PGND. I would like to send you some design files, if possible, so you can see how we have laid out the circuit. You can email me at htaylor@comverge.com if you are available to take a look at our design.
Best Regards,
Harold Taylor