The inverted word order of the original text (“then are ye sanctified”) was changed in the 1841 British edition, undoubtedly by accident. The subsequent LDS edition (in 1849) restored the original inverted word order here in Moroni 10:33. Elsewhere in the text, we have other examples of this kind of inverted order after then:
Thus there is nothing wrong with the original inverted word order in Moroni 10:33, and the critical text will maintain it. As one might expect, there are examples with the noninverted word order as well:
For each case we follow the earliest extant reading.
Summary: Maintain in Moroni 10:33 the inverted word order after then (namely, “then are ye sancti- fied in Christ”).