imo, all releases are "dynamic", there is no such thing as a "dead release" where the string hand doesn't move and only the fingers relax off the string. video yer "dead release" and you will *always* see the string hand move, even if you try to suppress that movement, it's still there. this is pure, elemental physics at work.
back in the 60's, when i shot lots of freestyle recurve fingers target archery (what's now considered "olympic archery"), the "flying release" was the goal and it was the total opposite of the "suppressed dead release" in that you were encouraged to *make* the string hand move rearward.
i think that good archery shooting form will differ from archer to archer, in that we are all somewhat physically/biomechanically different, and the bottom line is always good alignment and consistent form. oh yeah, it always helps to have yer mental head screwed on tight, too. the quest continues forever, and ever, and always ....