I'm NOT standing up for management on this one but it's possible they did not know about the filing by Novartis. Novartis is driving LEE011, not ASTEX. That said, I believe a reasonably competent management would want to know what their partners a doing.
A quick review of Novartis' website DOES NOT show LEE011 in Ph III trials. Hopefully they will update the site soon. However, this website [Search: Novartis LEE011 clinical trials] shows a Ph III Trial organized on 10/7/2013.
BTW ... Just because management received one bid does not mean they have to accept it. In fact, I believe it means they did not market it correctly.