1. The Pope did not cancel any meetings with the cardinals this time because he never scheduled them at the announcement of the consistory before this all ever emerged. So you can't cancel something that was never scheduled.
2. Every Pope is a "lame-duck" Pope! They only have one term!! The only "lame-duck" pope in Rome is Benedict - and I say that with no disrespect to the man. But his authority was damaged, he was wise to resign. I have respect for the man. 
3. Cardinals are usually not removed, but privileges - such as voting in a conclave are.