Have just caught up now, with the show and this thread - and have listened to some of the Eyes on Gilead podcast.
I loved this episode. It was appropriately satisfying but also unexpectedly shocking.
I loved the way Fred got his comeuppance, and that June got her wish to frighten him to death. I loved that Tuello finally did get justice for June, as well as (with Lawrence and Nick) engineering the return of Fred to Gilead.
I thought it was a great touch to release Fred into No Man's Land - because no-one actually wants him any more. Canada don't want him any more, having got all the key information out of him (plus probably realising that he's being very selective about the truth of his own behaviour), and Gilead won't want him as he's a traitor in their eyes.
Only June 'wants' him - and in No Man's Land there is nothing to stop her (and the other handmaids) wreaking vengeance on him, in the most horrific way.
The killing of Fred is a final resolution of their handmaid's training as well - killing by hand a rapist. And horrific as it was (especially June biting Fred) it was an appropriate end for Fred, given what he had set up and done in Gilead.
What intrigues me now is what's going to happen to Serena. It was noticeable in the scene where Fred comes to say goodbye before he 'goes to Geneva' that she was on the phone to someone with something that sounded important/business-like - what was she speaking about/arranging? I'd love for her, in some kind of way, to be able to go back to her own, independent life - she was much more intelligent and successful that Fred 'back in the day', of course.
But - and it's a huge but - she also has to be punished for her crimes against June, so how will that play out?
Lots of juicy threads for series 5 to pick up on!