Avoid a VirusBarrier slow down with Time Capsule

I have a couple of machines that are using Time Machine to back up to a Time Capsule. Backups go fine, but restores have been painful. When I open up Time Machine, it appears to hang. Navigating to a particular date and then to a particular file takes a long, long time -- it's slow to the point where I usually end up Force Quitting it, thinking it was hung. 

After some research, I discovered that Intego VirusBarrier is responsible for the slow down. As you navigate, it must be actively scanning the Time Capsule backup. It is not noticeable on USB drive Time Machine restores, but it's very noticeable on Time Capsule over the wireless network. 

I disabled real time scanning and the restore flew. One can list the Time Capsule directory (mountpoint) in VirusBarrier's exclude list, but that could be considered a security risk. A safer bet would be to just temporarily disable real-time scanning during restores.