You said that you talked to him when you caught him in the act... so you are absolutely sure that he is awake when he is doing it right? I know that sounds crazy, but I have an uncle who is a sleepwalker and he always raids the kitchen. He gets out food, eats, leaves stuff on the counters. He even broke their microwave by pushing the buttons too hard all while he was asleep.
My daughter has also had bouts of sleepwalking. She does it more after she has gotten in trouble for something, which the doctors say is stress related. It really used to stress me out because she would be up roaming around in the middle of the night doing all kinds of stuff. She would turn things on and try to open the doors. She also got food out frequently. She even had no trouble navigating her loft bed, never once fell off even while dead asleep. The weird thing is that her eyes would be open and you could talk to her and she would even respond sometimes. There was one time I was sitting on the couch around midnight and she walked into the room, I said "Hannah, what are you doing up?" no response.. she walked over to the middle of the room and reached up in the air and made a motion like she was pulling on something. I asked her again what she was doing and she told me she was "taking care of these things" I said her name loud and she finally woke up and looked at me like I was crazy.
My daughter has also had bouts of sleepwalking. She does it more after she has gotten in trouble for something, which the doctors say is stress related. It really used to stress me out because she would be up roaming around in the middle of the night doing all kinds of stuff. She would turn things on and try to open the doors. She also got food out frequently. She even had no trouble navigating her loft bed, never once fell off even while dead asleep. The weird thing is that her eyes would be open and you could talk to her and she would even respond sometimes. There was one time I was sitting on the couch around midnight and she walked into the room, I said "Hannah, what are you doing up?" no response.. she walked over to the middle of the room and reached up in the air and made a motion like she was pulling on something. I asked her again what she was doing and she told me she was "taking care of these things" I said her name loud and she finally woke up and looked at me like I was crazy.