If you want an example of a dead release where the archer's hand doesn't seem to move much at all after the shot, check out Ron LeClare's section on MBB 1. In most videos of Rick Welch, his hand seems to bounce around a lot after the shot goes off, which he attributes to shooting a fairly heavy weight bow. However, if you watch his string arm, his elbow doesn't move much.
If you check out Rod Jenkin's section in MBB 3, he talks about the different stages of drawing an arrow: excessive pulling to anchor, balanced pulling at anchor, and expansion to completion of the shot. I believe everything is the same for both dead release and dynamic release through balanced pulling at anchor.
For a dynamic release, pulling during the expansion phase results in some rearward movement of the arrow. There will necessarily have to be some rearward movement of the arrow during the expansion phase, as physically the pull on the arrow is greater than the pull exerted during the balanced pulling stage, when there is no conscious movement of the arrow at all. The release happens during the expansion phase, and the additional pull during this phase results in the vigorous rearward movement of the string hand that is evident with a dynamic release.
For those who use a dead release, there is no expansion phase. The arrow is released during the balanced pulling phase. There may be some movement of the string hand on release, as a result of recoil, although, in the case of Ron LeClair and some others I have observed, the movement may be almost imperceptible.
I think the important thing to note is that the dead release is not just a slower version of the dynamic release, and there is no conscious "pulling through" the shot. The problem is, most people, including me, have been grilled on pulling through the shot to the extent that we assume there are only two possible outcomes: either pull through the shot or collapse. Holding at full draw with balanced pulling and releasing without an expansion phase is a learned skill, just like the dynamic release is a learned skill. You're not going to ruin your shot, permanently anyway, by trying something different. If it doesn't work better for you, you can always go back to what you were doing before. I know there are people who have tried Rick's method, don't like it, and go back to the dynamic release. There are others who like it and never look back. Both of those outcomes are fine; the outcome that is not so fine is thinking that the pull through method must be a part of Rick's style when it isn't, because then you really haven't tried his style at all.