@acebmxer thanks, the trace explains it. After the Finalize, the new RPU patched Host 1 and rebooted it at 11:42 your time, then waited for it to come back. When you disabled and re-enabled the pool in XO (I assume Settings > Servers?), XO dropped the connection the RPU was using and opened a new one. The running RPU kept watching the old connection, so it never saw Host 1 come back, and it failed on the 20 minute timeout at 12:02. That's also why it never started on Host 2. The stop you sent at 11:51 didn't cut that wait short either, which we'll look at on our side.
So next time, leave the pool connected during an RPU even if the master takes a few minutes to come back. XO reconnects on its own and gives each host 20 minutes.
The bugtool isn't needed for this run. Can you confirm two things: was "disable and re-enable" the toggle in Settings > Servers, and is Tilton Host 1 the pool master?