This one had food pairings to go with the beers, they were supposed to be fancy-pants gourmet offerings, braised elk with pepitas, in mole sauce, for example, but just having a little something helps reset the palette.
Also, and maybe I'm just kidding myself here, it seems like the sours don't wreck your pallet as much as IPAs. One strategy we employ when a brewer has two different beers is that the wife will take one, and I'll get the other, then we each share. At one point we had 2 IPAs and honestly couldn't tell the difference, so yea the palette does get a bit numb. I had a couple Pilsners that seemed tasteless. But yea, by the end you're just "this is the best ever, no, THIS is the best ever..."