I was doing a little research today and collected some interesting stats.  According to what I've found, it should be easy to direct your customers to better sports books.

Bwin Ratings

SBR rating C-
http://www.sportsbookreview.com/sbr/bwin/

SoccerBetting.info - 42 (out of 60)
http://www.soccerbetting.info/bwin.php

Top 100 Bookmakers - 2 (out of 5)
http://www.top100bookmakers.com/bookies_bwin.php

Surwins.net - Average Visitor Rating: 3.5 (out of 5)
http://surewins.net/bwin/bwin.htm

Bookmakers review - 2
http://www.bookmakersreview.com/Sportsbooks_Ratings_sorted_alphabetically/
2 Poor. Assigned to bookmakers regarded as having significant weaknesses which could negatively impact a player's betting experience. In some cases these weaknesses are magnified by the unwillingness of the bookmaker to correct past problems or to change business direction over the long term. In short, if you happen to play with bookmakers rated 2, you are probably asking yourself for trouble.

Goonersguide.com - not listed

I voted to apply the new terms for new affiliates.  BTW, the wording is confusing on that option (number 3) since the terms wouldn't be retroactive if they only apply to new affiliates.

This may not be the popular option but it is the most realistic and the one that makes their terms illegal.  If they don't apply them retroactively, they are within their legal rights....

Once we get them to remove the new terms for existing affiliates then we can go after them to remove the predatory terms from the contract for all affiliates.  We have to be realistic and take this one step at a time.  First roll the terms back, then eliminate them...