(March 2, 2016, 11:35 AM EST) -- HOUSTON — A former police officer may testify in a constitutional rights lawsuit about how an officer should have acted differently in a fatal shooting where a man was unarmed, a Texas federal judge ruled Feb. 29 (Audry L. Releford Jr., et al. v. City of Houston, et al., No. 14-2810, S.D. Texas; 2016 U.S. Dist. LEXIS 24729)....