Q:

Proper reinforcing of electrical box on drywall

There is a 2-gang outlet/electrical box that holds plugs rather well (hair dryer, vacuum, etc). That is usually great, however when pulling the plug from the socket, the whole electrical box gets pulled and bends slightly. It always bends back after the plug is removed, though I worry that one day it will not!
Luckily, the other side of the wall is in a basement utility room, and thus exposed. It can be seen that the box is mounted with 1 screw and 1 nail, driven in to a block of wood that extends from the wall stud. Since the box is only mounted on one side, it bends on said side when pulled, especially when pulled from the GFCI outlet (right side of the last photo below, opposite of the screw+nail). I don't see how to secure it on the other side though.

How can the box be more properly secured?
Is a bit of bend typical? The box only has one mounting side, so I assume that the one side is usually enough. Still, the physics of it make me think there should be mounting options on both sides.

A:

Since the box is so far off the stud, my suggestion is to take that existing box off and put an old work double gang in. It secures to the drywall and should fit easily since the stud is far away.
Trying to nail the box in further is pointless since the drywall is up.

A:

Try using this - I think it is called barrington bars or something.  But cost like a $1 and works well for old work no need to redo the box.

