Uncan

There is need of articulation — a combined effort to "uncan the canned goods."

Source: wiktionary

[...] that the can contained the head of a porcupine still affixed to a live and active body. The amused towerman “uncanned” the porky and sent it on its way.

Source: wiktionary

Canning and uncanning procedures will be discussed in general, because as you know each weapon and missile has a specific ordnance publication with detailed canning and uncanning procedures that apply to that specific weapon ...

Source: wiktionary