Magic, If you had educated yourself on MLC and read the postings of others, not only on the active forum, but also the archives, you would have read that the more you set boundaries and adhere to them, the more the MLCer will try different things to see if you are sincere in your boundaries. Also, the more YOU change the more irritable they will get. In some cases, they will be nasty for a while and then change up and be nice, just to get you to take the bait and pull you back into their drama. It is the dance. The only way to break this dance is to continue moving forward and do not take their bait. Make changes for you and only you. Do not make changes, toss out threats just to get them to react and/or change. They sense when you are toying w/them. Everything has to be real and true. No games!
So, he's being irritable, ignore him as much as possible. Don't make any comments about his mood. Little boy has to sulk for a good long while. When he sees you aren't biting, he'll eventually stop his little temper tantrums.
Yes, it is very normal.
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.
