This link takes you to a video press conference that Phoenix police held concerning the previous death of a woman who was in the custody of airport police. Pay particular attention to the section where the commentator describes the woman being placed on the ground. The process the officers used in using multiple officers to bring the woman to the ground safely is a standard practice.
Unfortunately the news reporter referred to the technique as the woman being forced to the ground. This is another example how the words used by news personnel can certainly bring about the wrong perception.
On the other hand, the fact the woman was left unattended and unobserved in a room along later and was found unresponsive was unwise.