If I were you, I would try contacting the Indonesian Embassy in Canada.
Embassy of Indonesia in Ottawa
But in my mind, since your husband still holds his Indonesian passport, and if you guys have proof of mariage (weddingcertificate), I don't see a problem to apply for this KITAS.. However, you would not be able to legally work in Indonesia (not yet).
as for the price mentioned on agency websites "4500rp.", that's way-way-way too cheap..check the pricelist on the above website.