It seems if his Polish fixture at Opole had been on he would have ridden at Plymouth on Saturday, Opole on Sunday and then Abensberg on Monday.
With Opole being called off and then being required to travel to Abensberg for practice (a day earlier on Sunday) it has been mentioned he cannot get an early enough flight for the practice signing on which I believe is 12-12:30pm. There are still some flights bookable from London that arrive in Munich before midday but they may be cutting it a bit fine so I guess the decision was based on that.