So it’s unloaded and you’re in some random spot that need to load it back up now or???
Agree you can use one of the rear jacks in front. Likely anyway. Mine will raise on 3 jacks.
You don’t need to have it on the truck to remove a jack.
You cannot move it with one missing front jack. And you cannot load it without both front jacks. Either jack up that front corner a bit and remove and replace that jack (from a rear jack if it will hold or a new one) or repair the one in place if possible.
Check what bedlam said probably the shear pin if you let them get corodded up.
