Let me add that Riis was within his rights to ask for an honest answer when asking if a rider is planning on leaving the team considering he was furiously trying to find sponsors for the team for 2011. Without a commitment from his top riders he couldn't very well successfully attract sponsors. When the Schleck's told him they weren't bailing when in fact they had a plan in the works with those starting up the Luxemburg team, and then that news began to surface in the media, I'm sure whatever prospects Riis had dwindled significantly.
At the same time with the precarious situation that existed at Team Saxo Bank at the time, Riis and any potential sponsors knew that those riders in the final year of their contracts would be, at the least, putting out feelers to see what teams were interested AND other teams, like vultures circling a dying animal were likely making contact with all concerned even those like Cancellara who still had a year to honor on his contract.
Ultimately it was all about: 1. Self preservation 2. Staying with the group your most familiar and comfortable with and 3. Dollars. Team Luxemborg seems to have a bottomless pit of dollars to offer prospective riders and Riis could never match what they were offering. We all can assume that getting Contador on board was the primary draw of the sponsors and he doesn't come cheap. In the end, for those that say the primary reason for mass exodus of Saxo's talent was due to some character flaw of Riis', how does that explain why those that stayed didn't also bail like Gustav Larrson and Richie Porte? In some cases riders sometimes simply need a change of leadership/scenery.