Fair enough since I didn't know where he lives, but the assumption he impressed with his statement was that his back problem would eventually heal.
Anyways, as I said, the bands that play the festival should be your incentive to go, everything else being secondary. The bands that Wacken has been booking regularly tour to the point where friends of mine who once regularly made the trip stopped because it was simply cheaper to see these bands in a small club (and in some cases, it's way more fun to see the bands in that setting). But whatevs.