He hasn't been fired. That's not what the reports are saying. He has been suspended from CBS radio for two weeks without pay, but he has not been fired by CBS. MSNBC will no longer simulcast the CBS show, effective immediately.
Basically you are partially correct. NBC has fired him, or will not simulcast his show but CBS has not fired him. YET.
MSNBC drops simulcast of Don Imus show
Network apologizes to Rutgers women's basketball team for racial remarks
• MSNBC will no longer simulcast Imus
April 11: NBC announces that MSNBC will no longer simulcast the Imus radio
NEW YORK - MSNBC said Wednesday it will drop its simulcast of the “Imus in the Morning” radio program, responding to growing outrage over the radio host’s racial slur against the Rutgers women’s basketball team.
In a statement, NBC News announced "this decision comes as a result of an ongoing review process, which initially included the announcement of a suspension. It also takes into account many conversations with our own employees. What matters to us most is that the men and women of NBC Universal have confidence in the values we have set for this company. This is the only decision that makes that possible."
The network statement went on to say, "Once again, we apologize to the women of the Rutgers basketball team and to our viewers. We deeply regret the pain this incident has caused."
(MSNBC TV is wholly owned by NBC Universal. MSNBC.com is a joint venture between NBC Universal and Microsoft).
The network’s decision came after a growing list of sponsors — including American Express Co., Staples Inc., Procter & Gamble Co., and General Motors Corp. — said they were pulling ads from Imus’ show for the indefinite future.
But it did not end calls for Imus to be fired from the radio portion of his program.
The show originates from WFAN-AM in New York City and is syndicated nationally by Westwood One, both of which are managed by CBS Corp. For its part, CBS has not announced plans to discontinue the show.