The relevant portion from the FAIR article:
Following the loss of the 116 pages, the Lord told Joseph:
1 NOW, behold, I say unto you, that because you delivered up those writings which you had power given unto you to translate by the means of the Urim and Thummim, into the hands of a wicked man, you have lost them.
2 And you also lost your gift at the same time, and your mind became darkened.
3 Nevertheless, it is now restored unto you again; therefore see that you are faithful and continue on unto the finishing of the remainder of the work of translation as you have begun.
4 Do not run faster or labor more than you have strength and means provided to enable you to translate; but be diligent unto the end. (D&C 10:1-4)
Thus, "it" (Joseph's gift) was restored to him, but there is no indication that the Nephite interpreters (Urim and Thummim) were also returned, Joseph having also lost "them." That is, after repenting, Joseph would recover his seer stones, but apparently not the the Urim and Thummim.
Is there no historical support for supposing that the U&T were used in translating any portions of the Book of Mormon as we have it?
Thanks.