hunter fan light control--can it just control the fan?

I have removed a ceiling fan from the home I just bought. When running, even at the lowest speed, it wobbled. Now that I have the fan and mount removed, I see that if I push on the sides of the outlet box, it moves slightly. I am concerned that the previous homeowner either installed the ceiling fan in a box meant for just a light fixture or they installed the ceiling fan box incorrectly. How do I tell if this will be safe for my new fan? Pictures of the box are located here: [url=http://drop.io/yahhzzb]drop.io yahhzzb[/url] Thanks!

Electric rates are set to soar 50% here in PA in a year and I currently have older low watt lights (the cheap home depot kit kind). I have a 40-50ft walk area in front of my house where i had about 12 lights that worked adequately and in the back of the house in my spa area, i had a kit of about 10 lights. I think they are about 11 watts each so 22x11=242 watts and at about 12 cents kwh that is 9 hours for 26 cents a night (12 hours in winter would be 35 cents a night. So that's over $100 bucks a year just for the lights. This is about one month's electric for me so i want to cut it back as much as i can. Even if there are new solar lights that work well, the walk is on the north side of the house and there are trees there. So not an option. The spa area is on the south side but is rather enclosed with house/trees/fence so at most gets more light than up front but not a full exposure. I do, however, have great southern roof exposure for solar in regards to other issues. any suggestions on options? Im open to anything as i have a totally open canvas since my house has been excavated and i'm starting from scratch with new grass etc around it. I'd be open to area lighting vs individual fixtures if it used a lot less electricity and didnt look like i was lighting up a parking lot. I had one idea about using a solar battery charger to power this but will start a separate thread about it so as not to muddle the issue.