- Are police equipped to deal with mental health crisis situations?
O'Connor said earlier this week he would pull out over conflict-of-interest concerns raised by victims' families.
The law firm O'Connor works for acts on behalf of the Toronto Police Service in civil suits, some of them involving use-of-force.
Blair is mandated under the Police Services Act to conduct a review in the death of 18-year-old Sammy Yatim because the Special Investigations Unit is involved.
Yatim died in July after he was shot multiple times during a confrontation with police aboard an empty streetcar.
Blair appointed has said the review will be "extraordinary" in scope, looking beyond Yatim's case to include a review of international best practices.
The shooting is also being probed by the province's Special Investigations Unit and Ontario Ombudsman Andre Marin, who will examine how police set guidelines for handling such situations.