Twenty-Four Karat Kill - S1-E8
Continuity mistake: When Andrea finishes wiping the test fluid from the gold bar, she holds it out with her left hand. After the cut scene, her right hand is holding the bar.
Character mistake: While trying to figure out how to evacuate the other patients in order to get to Danny, McGarrett mentions a patient's daughter in room 309, but it's mentioned in other scenes that the man and his daughter are in room 306.
Not That Much Different - S1-E23
Continuity mistake: When Steve is questioning Lannie Devereaux, his arms change position several times on the back of his chair, without him actually moving. (00:24:15)
Continuity mistake: When Ms. Karabinos is worried her father is dying, she is holding her face in her hands, but then her arms are suddenly down by her sides. (00:24:55)
Answer: He was fired. He never really appreciated his character. He felt Kono was portrayed as a big dumb Hawaiian and that the stereotype was racist. He also felt underutilized. He was fired after a heated argument with the show's publicist regarding his character. It seems there's not much details given regarding the incident or the firing, so it's seems possible he upset the show's producers as well.
Bishop73
No he said something derogatory about one of the Jewish producers that's why he was fired.