Rules and contracts with cable companies and satellite are 2 different beasts, and one thing DBS has been fighting for decades; a fair and even playing field.
In many cases those sports networks are owned or partially owned by those cable companies; so you can draw your own conclusions there.
And as it has been said many times, CSRs, for whatever reason, don't always get the facts correct or at least don't explain things very well when it comes to more technical issues such as hardware, blackouts and DMAs.
I wish you luck, and be sure to post back with details of what you did; if, and when you get it turned on.
I and others have said it 100 times before and this is just another example of why these affiliates and RSNs need to be required to cease market boundaries and allow the customers decide who, what, where, when and how regarding ALL their programming desires. If you put out a great product, customers will buy it and all these boundaries and limits do is alienate users. We live in an ever shrinking society, and just because I live in place 'A' doesn't mean I follow team 'A' as well; so open it all up, in all the feature-rich glory and allow the users to decide! <end rant>