...Catherine may have been 'outed' but possibly Michael does not realise the strain of being a 'carer' . When your spouse is fighting cancer...sometimes it is all too much to bear and I am not in the least surprised Catherines mind needs to take a holiday , she has been to hell and back, as for Michael, he is still living it....five long years before he gets the REAL all clear.
http://www.dailymail.co.uk/tvshowbiz/article-1379897/Michael-Douglas-says-Catherine-Zeta-Jones-outed-bipolar-struggle.html