I cannot un-group the speakers

What speakers are you trying to ungroup? Or are you trying to unbond them? Which device is your controller app on?

If it's a mobile device, and you're using version 8.3, you would go to the "rooms" menu at the bottom of the screen, and then select the rooms that you want to ungroup. A box would then show up on the right of that area that says "group", and you would click on that. Then select the room that you want to ungroup so that the selection icon next to it disappears, and then click done at the bottom of the screen.

Bruce,

I know how to un-group them. The point is that the application won't let me. When I do the steps you mention, the application does nothing.

I am running this from the Android app with the last beta/newest release version of Sonos.

When I follow the un-group steps, the application still lists all my rooms grouped. When I try to play a song, it only plays on one speaker. There are 10 Sonos speakers in this group and I cannot remove them.

I eventually had to reatart

Restart of what? The speakers, the router, or the app? Did this restart fix the issue?

If you're running a beta version of the app, you shouldn't be posting here. And there may be differences between the release version of the app and the last beta, so you should be sure you download a fresh version.

I'll look forward to seeing what Sonos can make of your diagnostic. Thanks for posting that.

This beta was just released to the public yesterday, so technically I can't post on the beta community since that was locked and no one can post on there.

I restarted the speakers.

I pulled up the diagnostic and it came through corrupted, which usually happens when there's a lot of network trouble. That could be the cause of the grouping issue too. If you still are having any trouble, I'd recommend a router reboot as a first step.