"Unavailability as a witness" includes situations in which the declarant:
A declarant is not unavailable as a witness if his exemption, refusal, claim of lack of memory, inability, or absence is due to the procurement or wrongdoing of the proponent of his statement for the purpose of preventing the witness from attending or testifying.
The following are not excluded by the hearsay rule if the declarant is unavailable as a witness:
Wyo. R. Prac. & P. 804
Amended October 14, 2008, effective January 1, 2009.