I've ever had one leak on my CPU years ago when I got lazy on a rebuild (no leak testing etc). Luckily, it was the first time I was using non conductive coolant.
I feel for the guy, personally, I'd claim on my household insurance as the value is worth it.
Owowowowch, that has to hurt. I would be distraught is such a thing were to happen no matter what the hardware that gets the scorching, let alone the Titan here. Very very upsetting for sure, just goes to show how not being throughout in your construction can really, really come back to hurt you.