Just a distraction from the main story here ... once and for all there should be a full *independant* investigation into his campaign ties to Russia. Full stop. If there's nothing to hide then he should have no problem with that.
Flynn is the second high ranking person in his inner circle to now get fired due to questionable ties to Russia (Paul Manafort, former head of Trump's campaign was also fired after his ties to Russia became public months ago), and despite his efforts to say it was "fake news" intelligence agencies are saying they have verified parts of the M16 spy's dossier on Russia/Trump that says they have blackmail intel on him.
There should be a full investigation, even some Republicans are now calling for it. He should also fully release his tax returns, like every other president has for the last 40 years so we can see if he does indeed have business interests that tie him to Russia. Again if there is nothing to hide why is he being so evasive on this issue.
Anyone who flipped out over Hillary Clinton not being able to setup an email server and is willing to give all this a hand wave is a hypocrite.
And he can go fuck right off if he's angry at the press for reporting this stuff, that's their job. If he wants to squash all this stuff, allow for a full investigation, release your tax returns. If you have nothing to hide there should be no problem.