My cousin runs a body shop and I know he found a way to disable that feature on his Tundra as well as re-connect the rear view camera on a switch so he can view his tow anytime without being in reverse. He said there are plug and play devices out there that correct this for about $350, but he found someone on a tundra forum that makes them for $60. Maybe he can do them for Xterras? or maybe its a good start for those of you looking to correct it.
Now if anyone is ready to trade up or get rid of their setup, please let me know...haha.