Right to be angry at my husband? WWYD?

My husband had a colonoscopy exam today at 15.00. My daughter OT at 13.30; it ends at 14.30. In order to make it to both places, I told the OT therapist the session will be short today, until 14.00. She says OK and I tell my husband the plan. That as soon as we finish the OT we will come pick him up to drop him to the doctor and then pick him up once he is done. He says OK.

Today, as soon as I arrive to the OT, he sends me a message that he is going on his own with his car and he does not need us to pick him up. But he is acting all victim like, "I don't want to be anyone's problem, I will take care of my shit" and so forth. WHAT THE HECK?

I never said he is a burden or that this is a burden. I was actually so proud of myself how I was juggling everything along with work. I felt so angry at his attitude. I was also worried because they are going to put him under anesthesia and the doctors strongly advise that patients are picked up after the procedure. But he goes with his own car, wanting to drive back. What if something happens? How can he not care?

I called the wife of his best friend and asked her to ask her husband to call my husband to convince him to be picked up either by a taxi, or by them (or me if he accepts), because he is not listening to me. My husband agreed to be picked up by his best friend. What do you all make of this? I cannot make sense of this behavior and I am angry at him for being so childish. How would you feel/react?