Of course Flynn is a sycophant.  Were he not, Trump would not have selected him.  I agree with Mr. Kale that it's highly likely Trump approved the contact and that discussion assured Putin's representative that the sanctions would be withdrawn after Trump took office.  Flynn doesn't seem the kind of soldier who would stick his neck out w/o being ordered.  After the #$%# hit the fan, he had to be fed to the wolves....and like a good soldier accepted his fate.  

Be assured, it's doubtful that Flynn will ever testify under oath.....There's one simple question which the Administration doesn't want asked "Gen Fjynn, just who knew you were going to make the contact and discuss the sanctions?  and, specifically, did President-elect know you were discussing diplomatic affairs with Russian officials at a time when you were still a civilian? and, if so, did he approve of the contact?  That series of questions could be very, very embarassing for President Trump.