Wow, that stinks. Sorry you had bad beer there. If you do go again and it happens, pull one of the owners aside quietly and ask them about it. Maybe they don't realize it. I would hate to see a young brewery/restaurant go down.

I normally drink either their Ice Jam lager or Kilkenny Red while I'm eating as it is low ABV, but take the dark stuff home in growlers. Probably hard to screw up the simple stuff I drink.