Forum:Farmory reset?

Someone in the Crimson Armory article - I believe AtlasSoldier, but I'm not sure - claims it's possible to reset the Farmory chests by leaving the Farmory and re-entering. Being extremely motivated to utilize this technique, I attempted the described procedure - leave and re-enter - and found that doing so respawned the red force field that is normally lowered by killing Knoxx and which also prevents access to the Farmory. How, pray tell, is that force field bypassed without having to kill Knoxx?