Are the Mu'tazilah who deny that the Qur'an is the speech of Allah disbelievers?

Al-Halabi : He saysThe questioner : You mentioned in this answer that the Mu'tazilah are not declared disbelievers; how is that possible when they hold to the creation of the Qur'an and other doctrinal matters that contradict the creed? What is the criterion in the issue of disbelief?

The Shaykh : Yes, this is an important question. The truth is that there is a middle ground; it is not necessary that if a person falls into disbelief, that he is thereby declared a disbeliever.