Everyone should note that the design of this particular stand is the culprit. Never secure glass with anything other than the weight of the glass, and then only using enough supports to overcome large bending loads. Glass is wonderful for compressive loads, but lousy when under bending, especially when it is secured by fasteners that go through the glass, as the damaged glass photo seems to indicate. Glass does not expand under heat, to the same degree, as metal does. A good design allows for a way for the metal stand to move under the glass, without placing undue forces on the glass. All bolts that are used to assemble the unit should be left hand-tight prior to placing the structure in it's intended location. Then tighten the structure, so as to make sure it is flat on your floor. A slight load, from the glass, is preferred, as well as tightening from the inside to the outside of the support structure, in a "star pattern". Then, place your Plasma on the unit. Go back in a month, and check for loose fasteners.
I also have renters insurance, which offers me peace of mind. My two cents - Materials Engineer