Countrywide is not kaput; they were just sold to Bank of America.
No, you don't really have a say in who your mortgage is sold to. One of the papers you signed in the mile-high stack at closing advises that your mortgage may be sold to another company.
You don't really have any options, other than refinancing - and who knows, your new mortgage might get sold right back to Countrywide. So I'd say just enjoy your new checking relationship with Flagstar and get ready to write checks to the Big C. 
I have Flagstar as well, so perhaps im next 
I did notice that they messed up on my escrow and it is going to fall short so they upped my payment by $95 a month to make up for it, so maybe its a good thing? 
A lot of people have received CLDs on their CCs and the reason given was because they had their mortgage owned by a sub-prime lender. The name most spoken about in this context is Countrywide and all the people who had it happen to them had their mortgages bought by them.
Dang I didn't even think about that. Man I hope that Flagstar doesn't sell me to CW 