LeChuck had (chapter 4 spoiler)

[coolsome]

The cursed cutlasss of kaflue he used it to stab poor guybrush

[Planeforger]

Yes, yes he did.
At a guess, I'd say that we're going have to make a replacement one in the final episode (we've already got one of the ingredients) - or somehow steal it off him - to get some hot monkey vengeance.
...or something. :/