If you can move out of the path of a moving disc, YOU SHOULD DO IT. Nothing in the rule supports the notion that you can't move yourself or a bag or a stool or whatever until the disc comes to rest.
The key word in the interference rule is "intentional". That means you have to have intent to interfere to be penalized. Moving out of the way of a moving disc, or picking up a bag so that a moving disc does not strike it is NOT INTENTIONAL INTERFERENCE, as the intent is clearly to not interfere.
I'd argue that if you have the opportunity to move yourself or a bag out of the way of a moving disc, choosing not to is intentionally interfering with the disc more so than attempting to get out of the way. The rule states that "[p]layers shall not stand or leave their equipment where interference with a disc in play may occur." Note that there's no time component to that. Nothing that differentiates actions/inactions before, during, and after the throw.
Chuck's interpretation would have the rule dictating that once the disc is released, everyone and everything has to freeze until the disc comes to rest. I believe that the rule dictates that if a player or equipment is in a position where interference not only may occur, but will inevitably occur, then an effort to remove the person or equipment should absolutely be made no matter when the realization hits.