Spark and Multiple Connections to a Single Wildfire Server

First off, great products. Working wonderfully here.

I ran into a problem with using a Wildfire server behind two internet connections. I have my DNS setup correctly (2 ips behind 1 DNS name) but the round-robin system isn't changing IPs fast enough or something. so my quesiton is:

Is there a way to put multiple servers into Spark (like a prioritized list) to connect to my Wildfire server?

Thanks for your input in advance.