After a full week of freedom, my teeth are back to being strapped down. I just returned from the orthodontist with my retainers. These are clear-ish plastic trays (both top and bottom) which clamp down and keep your teeth from shifting. Very similar to Invisilign trays (same?). I need to keep the trays in 24×7, only removing to eat and clean/brush.
In the week of freedom my teeth had they have definitely moved and now the retainers are pushing everything back into place. Yes, this is uncomfortable; much like getting braces adjusted. I expect the soreness to be gone in a week.