On a Mac:
1. Quit InDesign
2. Press and hold Ctrl+Cmd+Shift+Alt and don't release
3. Launch InDesign. If you did it correctly, you will get an alert to reset prefs.
4. Release Ctrl+Cmd+Shift+Alt
The preference and cache folders are in your user Library folder (not the System or Computer Library), which by default is hidden in recent versions of OSX.
These are the folders. If they don't show look here How to Always Show the User Library Folder in OS X El Capitan & Yosemite the Easy Way:
...user/Library/Preferences/Adobe InDesign/Version 10.0
...user/Library/Caches/Adobe InDesign/Version 10.0
Awesome, thank you. I got the delete menu, and the layer indicators have re-appeared! However, I still am unable to move any objects.