Does divorce occur if one pronounces it in a state of extreme anger, without losing awareness, but being unable to control oneself from uttering the divorce and not intending it?

Anger does not prevent the occurrence of divorce unless it removes one's sanity. If you pronounced the divorce of your wife while fully aware of what you were saying, then your divorce has taken place, even if you were in a state of intense anger. As long as you have divorced her three times, she has become irrevocably separated from you (baynunah kubra), and you cannot take her back unless she marries another man out of genuine desire, and he consummates the marriage with her, then divorces her or dies, and her waiting period (iddah) from him ends. Some scholars hold the view that a divorce pronounced in a state of intense anger does not take place, even if one's sanity is not removed.