Arachnid, I'm assuming you've got a two cradles; one in the VX and the other for the house. Since from your description it seems as if it's getting power (screen freezes) I'm more inclined to look at the antenna and it's connection. Check where the antenna plugs into the cradle, make sure it's seated fully and that the micro-coax hasn't been kinked at the plug. Then check your cable route and look for kinks or damage the cable sheath. If all that looks okay then maybe swap your home antenna for the VX antenna and see if the problem follows. I know the antennas have different mounts, but you're a VX owner; get creative! Besides, it's just temporary for troubleshooting.

Good luck!