Cannot Reach Restore Progress Screen In Titanium Backup PRO
I had the same problem on Cyanogemod 7.2.0 HTC Wildfire.
In the end I simply stopped the TB service through the android application manager and ran the batch operation again. It will continue restoring all the apps that have not yet been restored.

This is a workaround, not a solution since you should logically be able to hit the home button and continue the batch process by simply accessing the notification.