No, happend before I got those. They wouldnt have helped though, the force of the impact bent the Ti skid back about 10-15 degrees, and the X-braces bent upwards in the front rather like a banana- lost about a dozen screws nearly as they all stripped out the underside near the front end; the battery tray/plate its was unharmed.
Thats the major weakness really, the design of the X-braces, by introducing a nice big weak area that will bend easily when forced, rather like the arch in a trainer's sole.
A few pics of the damage on that occasion:
I still have the damaged X-braces, not sure why, but they are just about useable if you skip one or two screws, though I just ponied up the cash for some newer G3 braces (same design, just not hollowed out on the underside to improve strength).