Some people react that way and it's not because they are all in MLC. Could have been something else was stressing him, but...
He probably got stressed out because you were asking questions and he thought you were possibly challenging him about moving the old TV versus going out to get a new one. It could have also been that he thought you were wanting him to go purchase the TV and he didn't have the time to go get one today.
They do have those little temper tantrums and I call them "teething". He'll be fine in a little bit.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.