I was thinking that normally in order to reset an explorer area you have to drop group and reform and go back in. Or if you are soloing an area you have to wait 5 minutes before reentering. Well my suggestion would be to put a reset option. Something a player or group of players can do without regrouping or sitting around 5 minutes.
Maybe an option in the quest panel under the select area buttons to reset. That's the best I can come up with as not all area's have someone to talk to in order to enter the adventure area. Any idea's as to where to locate the button or if this is even a good idea or not are welcome.