Serious? I personally haven't noticed a difference between them here and in Europe. I didn't know they were viable to BUL over here, I thought it all came out of Leuven. Are the bottles BOL too? I'll admit though, on occasion Hoegaarden on draft is not as fresh as it could be.
I'm surprised they didn't replace the bottles for you? I've not had a bad bottle there, but I'd certainly hope that if I did they'd replace it.
It's a shame they don't stock more variety there though - but I guess thats a part of them being a ALH chain pub.
edit: InBev's brand factsheet doesn't mention licensing for any countries for the Leffe range or Hoegaarden range, it's mentioned for all the other beers BUL though :
http://www.ab-inbev.com/pdf/brandfactsheets.pdf