The fact that the first officer had to use "alternative methods" to open the door should have raised alarm bells left, right and centre, and the captains psychological fitness to retain command needs to be called into question.
Being upset with your F/O is one thing, but barring him/her from the office is entirely different. How long did he intend to keep him/her out to "teach him a lesson" for daring to agree to the drug and alcohol testing which caused the delay - 3 minutes, 5, 10, half an hour? Did he intend to keep him out indefinitely? Did he even know himself what his intentions were?
I sorry but this guy needs to be out of the LHS RFN. I wouldn't like to fly with him driving next time. What if (god forbid!) there was an issue with, I don't know, a flight attendant going sick or a pax causing a delay? What type of tantrum will he throw next?
Any of his peers care to comment or is it
?