Well, I just updated LXDE 64bit. It pulled in the openbox2 package, as well as the 64bit version of libopenbox2. That upgrade went without a hitch.
Updated LXDE 32 bit. All was well until logout. After login, some things did not work in the LXDE Control Center (Configure Your LXDesktop). Wallpaper was missing, as well. Installed libopenbox2, then logged out and back in. Same deal. Right-clicking the desktop gave me the Openbox menu instead of the LXDE one. Rebooted. Everything went back to normal.