I think you can uninstall the Console without effecting the Java itself. Firefox has a extension call JLib, that's the Java plug-in. Now, there has been some bugs with it not working correctly. I'm not sure if they fixed it or not.
However, I saw my mom using firefox downstairs and playing on POGO. The only thing I can think of, if it's just the updated browser without any extensions, it should work. I don't they didn't install anything on it. I'm still trying to figure it out.