A cursory reading of the matter supplied indicates a quite unique legal problem indeed, and we are inclined to undertake the matter on your behalf if only for the challenges involved, and the opportunity to set benchmark law.
Several questions arise.
Permit me to preface the following remarks with the statement that they will be predicated on the presumption that the witnesses' testimony cannot be impeached, that it can be proven beyond doubt that this Yehoshua did, indeed, resurrect himself after his crucifixion. In that case there are a number of problems which need to be addressed. Most immediately, Shifting Sands faces a serious problem. If it can be proven that he has resurrected himself, your company cannot possibly avoid paying - and paying, and paying, and paying. It is difficult to imagine anyone resisting such a powerful temptation.