Here's what I don't really get. I saw the episode, and it confused me. Something about him robbing the house, or being accused of it. And he was with his kid or something. Did he really do it, or what? Did he come back to work afterwards?
shareThe episode starts with Sharon describing how Michael the Sec. bro was off-duty that afternoon and brought his son to the Osbournes house. He was wearing a T-shirt with "Ozzy" written on it. The cops saw him appearing suspicious and they followed him. They saw he entered from the rear garden and was with his son watching while the builders just finished the new swimming pool.
Or something like that. Anyway, Sharon tells how he got arrested and Ozzy fears for his Van Cleef watch and jewellery.
At the end of the episode we see Michael explaining that the police stopped him as they thought he was a burglar and obviously, being in a super-VIP residence, they thought the threat he could represent was of a serious one; they pointed a gun at him and took him in jail for the night. He explains that he was not due to start his shift until late but he was in the area and wanted to take his son to see where he works.
Sharon has been very nice to him and organized his release as soon as possible, she apologized and gave him a Christmas box and thanked him for his Christmas card.
No, he did not burgle the house neither got fired, he kept working there. Since the Christmas episode (and the Dinner with Ozzy) end the season we don't know what happened to him, we see new plain-clothes security in Season 2, may be Michael just worked at different hours or got a better job.. and in any case not all security people are obviously shown, there are obviously more than the usual 3 we see.