Anybody ever replace a Novik panel??

We've put a bunch of this tuff up, and every job i've always said, i fell sorry for the schmuck that has to do a repair if something ever happened since the only way i can see getting a panel out is to do like a steel or aluminum siding repair and start at hte top and come down with it so you dont fubar panels beside, above, and below bad panel that needs replaced. Here's a link to what i'm talking about:
Novik hand cut stone panels

Well, yesterday had an insurance company call, a client of their had a vandal throw BIG rocks and chunks of cement block at the side of their home. There were 3 broken/cracked panels scattered throughout the gable side of the house, and 5 more panels that had severe scuffing on them that need to be replaced.....Due to the interlocking design i'm having a hard time visualizing a easy way to remove/replace only the damaged panels....short of ripping the entire wall down, which will suck obviously since there will be a TON of these panels to keep in order.

If anybody has any links, experience replacing only 1 panel in the middle of a wall and the steps needed to make it happen without screwing up the panels around it, i'm all ears...i know there has to be an easier way, but i'm not seeing it.