http://wpilib.screenstepslive.com/s/...og-file-viewer
The log has a great plot that should help visualize your problem
I would be looking closely at radio placement, and would consider having a fresh radio at your next regional to substitute in. Review logs from your other matches and see if there are signs of connectivity issues.
In general terms, connectivity issues in one robot won't cause a replay. If the FTA isn't busy during practice day at your next regional, I suspect they'd be happy to show you the field monitor and discuss how replay decisions get made.