text: The tragedy for Cdl Müller is that the Pope has made it obvious for some time now that the Cardinal was being sidelined, mainly by his patronage of Cdl Kasper and alllowing Cdl Schönborn to introduce AL. As he was the Pope's doctrinal mouthpiece this was really a deliberate snub. Also the points raised by the CDF concerning AL were ignored, so it had no input at all in AL, it was deliberately excluded.
  It is said that Müller realised this but stayed on hoping he could do more good in office than out of it. Alas, it was to no avail, like Cdl Burke he was unceremoniously dumped and his deputy promoted; no doubt a bitter pill to swallow in private.
  In trying to not gainsay the Pope whose official voice he was and at the same time trying to uphold Catholic teaching, he walked a tightrope by attacking the 'dubia' Cdls whilst at the same time agreeing with them. A timely resignation would have been extremely embarrassing for the Pope and the Church. Müller obviously put the Church first.