No, fix the glitch is really the only correct route here. No good ignoring it. I assume you mean the glitch where you can heal back to life in the same place (leaving you in the duel with your in-game items), but the logic applies to most glitches.
In fact, if you are in a duel and glitch out, you would have your in-game not your duel inventory. Therefore if you have no redstone it is because you have none in your in-game inventory. Carrying redstone at all times will allow you to recall out of the known duel glitches, but still sometimes your opponent will kill you before you get a chance.
The Recall from Duel fix will lead to some kind of exploiting I am sure. No matter how it is coded, some combination of logging out and recalling from duel will end up allowing people to recall with their duel items, giving them a free full equip.