It's definitely something wrong with 2K's servers. Talked to a couple of my friends and they confirmed the same thing that you guys are getting.
"Unable to connect to the 2K Sports server at this time. The NBA Today and MY TEAM features will not be available until a connection has been established."
This sucks. I just wanted to come from work, chill and play "MyCAREER" mode.
One of the many reasons I'm starting to dislike 2K. Online Only Features, Bad servers, Spamming us with VC, and etc. Everyone doesn't want to play online. 2K's track record is good, but the past couple years has brought me a lot of aggravation.