Although rare, 'disequip' is a good transitive and intransitive verb with the meaning you intend:
trans. To divest (any one) of his equipment; intr. (for refl.) to doff one's equipment.
1831 F. A. Kemble Jrnl. in Rec. Girlhood (1878) III. 23 [He] arrived just as we had disequipped.
["diseˈquip, v.". OED Online. December 2015. Oxford University Press. http://www.oed.com/view/Entry/54283?rskey=BNKRlP&result=1&isAdvanced=false (accessed January 07, 2016).]
This verb is admirably suited for a 'disrarity' upon frequent use by gamers.
Some 'Dis'ambiguation and Other Notes in Response to OP Edits, Etc.
I used 'dis'ambiguation rather than 'un'ambiguation in the heading because I'm, most precisely, taking the ambiguity away rather than negating it. That's the difference between 'dis-' and 'un-'.
If by "more accurate" you mean 'more commonly used in a given context', then 'disequip' might not the word for you; in the language of gamers, 'unequip' is by far the most commonly used word for the sense you describe, at least for the time being.
If by "more accurate" you mean 'better suited to and more expressive of the concept intended', then 'disequip' might be the most accurate word to use, or perhaps 'deactivate', as shown next.
A commonly used verb, and accurate for the sense I understand you to intend, is 'deactivate':
trans. To render inactive ....