A tentative labor deal with Jackson Health System employees lost some luster Monday when the board that runs Miami-Dade's public hospital network agreed to phase out an unpopular pay concession but held off voting on performance bonuses for workers. Following a heated discussion in which the board vice chairman accused his colleagues and staff of keeping him in the dark about the agreement, the Public Health Trust voted 5-1 to defer voting on the proposed bonuses for up to 30 days. But trustees unanimously approved the phase-out of employees' pay contribution toward group health insurance.