Tel Aviv where there was at the time multiple rocket attacks by Palestinians (July 2014 was one of the worst periods for this in years), or Watford where he was admitted to hospital with a heart problem, then offered his resignation as he was too ill to work every day, as is required of a football manager?
Pretty harsh to label either of those as mental instability frankly.
Oscar did come across as a bit flaky, but he has been pretty successful where ever he has decided to stick around. When you look at the players he had with us and the injuries, he did an amazing job getting us to the play offs. I think he is a very good manager and he currently having a great time at Saint-Étienne, his twitter feed is full of pictures of him smiling ( I don't remember him being much of a smiler). I am really glad he is happy and I would not bet against him one day managing Barcelona.
As with Gus the football we played under him when we were in league one was revolutionary and we walked the league. Financially he will have no issues, but his ego will/has destroy his career. I will always be grateful for what he did and he certainly added excitement and energy when it was a bit waning in our 11 season at Withdean.