I agree with everything said here by the other players. Usually Jt1 I am in your camp but I think this play was slightly ludicrous.

How often does he steal your blinds? With A4os you are likely a 70/30 position or you are slightly ahead. You are also out of position.

I don't like the c/r either since he called the flop. Especially since calling down costs the same as check/raising and often he will have a small amount of improvement.

True