If your correctly pushing\\pulling at full draw your hand will naturally come backwards, if you hold on your face your going against a natural process but I think it shouldn't be exagerated like Olympic shooters as they have a huge amount of stabilization on their bows.
Last year I trained with Coach Kim Hyung Tak a top Korean Olympic coach, I asked about this type of release saying it's quite difficult to get right with a Longbow, he was telling me when they teach novice students they start with a quite short followthrough and it's developed over years of training to what you see at Olympics.
He suggested keeping followthrough for Longbow quite short 1-2" to help maintain Bow control, this seems to work well for me, I have control of shot and Bow and consistent groups\\arrow flight.
When I experimented with a longer followthrough it worked even better but found under pressure situations it was quite difficult to repeat so I went back to shorter followthrough which I know I can repeat under all conditions.