Carson City, Nev. (AP) — The head of the Nevada Department of Health and Human Services has acknowledged that his agency “blew it” by discharging a patient from a Las Vegas mental hospital to a bus station before he turned up disoriented at a California homeless center last month. The acknowledgement came at a legislative hearing Thursday, two weeks after the Sacramento Bee reported on the case of 48-year-old James Flavy Coy Brown, and after officials in two states called for a federal probe. “Policies were not followed,” said Mike Willden, director of the state agency. “We own it in …