Miami Heat forward Haywood Highsmith was driving home Tuesday night after playing the Orlando Magic when he hit a man — partially severing his leg — who was aiding another motorist on the road in West Kendall, officials said. Highsmith, 27, was given a traffic ticket for careless driving, a crash report read. Around 11:20 p.m., Nicodemus Jean Baptiste Cantave’s Toyota Forerunner was “disabled” and stopped on Southwest 136th Street near Southwest 138th Avenue, the report read. Unable to move it, Alekxei Pino pulled over to help Cantave. The report reveals that Highsmith was driving on Southwest…