Is the divorce pronouncement I uttered while angry, then repeated to my wife's family, considered a legitimate divorce, given that it is the third such pronouncement?

A man's statement to his wife, "You are divorced," is an explicit pronouncement that effects divorce, and his momentary silence does not prevent this. Divorce occurs even in a state of anger, unless one's intellect is completely impaired. If this divorce is the third one, she is irrevocably separated from him (baynunah kubra) and is not permissible for him [to remarry] unless she marries another man and he consummates the marriage with her, and then he divorces her or dies, and her waiting period expires. The questioner is advised to present his case to scholars.