Ah, I should have looked at the link in your sig before. I'm assuming that is the site your talking about right?
I see your using PHPBB, which is a nice board however certain bugs have been found with it and Googlebot. This could be one of those problems or it might not be. Best to try though...
Ok, nevermind. I was going to look up this problem in the phpbb.com message boards but it appears that they were hacked and are now down..
http://phpbb.com/
So I can't provide a fix to try as one is outlined in detail there. However, I feel that the problem is with each URL sessions are being passed so Google thinks each page is a new and unique page each time it visits it. Kind of getting caught up in a loop and eating your bandwidth and resources to no end. I suppose you could try this...
Create a .htaccess file and place it in your home directory with this in it (or modify the one there)
Code:
php_flag session.use_trans_sid off
and in....(I'm trying to remember how phpbb is layed out)...I think application.php if that is not there try putting this in header.php, in either case at the very top.
PHP Code:
ini_set('session.use_trans_sid', false);
If any of this causes problems then obviously delete them. The only other reason I can imagine that Google is hitting you so hard is that you are NFL related website and it's looking for new information about the super bowl to update it's index.