All my guns are gone

M416. I have the same problem as the Captain. It was one of my favorite guns since release, now they've gone and made it the best gun in the game. I've tiptoed around all the tryhard guns all this time... but now they've gone and buffed MY guns too much.

this morning got on and all of my guns and load-out weapons are gone

What I did was, in the room where the vending machines are. I dropped my guns on the floor. Then went back into the arena and picked up everything there and sold what i didn't want. Then turned around and started picking up my guns up off of the floor. That's
when I realized that my upper levl guns were gone.

I've did this before. In BL-1 and BL-2 and in all Dlc. If I was in a place where I wanted to pickup a whole lotta guns at once. I'd drop guns on the ground/floor. Grab everything all at once,then vend what iI didn't want. then pickup my guns. Why do this?
Because it's easy to do. and always been safe. I can drop 20 guns then have room to pick up 20 guns. Then vend them. then go back and pick up my guns.

But it's this time that ALL Upper Lvl guns and Torgue Vending Machine guns were gone. Why?

That's why I want to find a way to go back to specific point in the game as described in the OP

And how do I do a stat roll back? Isn't that what I did? Wth....

Oh yes. I let my nephew play under name all the time because he isn't really that good yet and complains they cheat (multiplayer) lol so I said just play combat training but my net has been cheap so I've been letting him play local and I joined and played
with him. *sighs*