I was in Pgh in 2001 when they lost that playoff game to NE. I have never seen an entire city with clinical depression before. We had more than a few people call in sick on Monday.
When they could talk about it, several people that were at the game told me it was eerie. 72,000 people leaving the stadium in complete and total silence.
I am in Denver now and their loss to Pgh was more like a Los Angeles loss -- some vitrol but mostly shrugged shoulders. Big difference.
Try wearing a Patriots jacket there.