I have never heard of torture being used during the October crisis. Did a search, found nothing. Have you got a link to that?
No he didn't do that.
http://en.wikipedia.org/wiki/War_Measures_Act
While the War Measures Act was in force, 465 people were arrested and held without charge.[16]
The response by the federal and provincial governments to the incident still sparks controversy. There was a large amount of concern about the Act being used, as it was a considered to be a direct threat to civil liberties, removing rights such as habeas corpus from all Canadians. This is the only time that the War Measures Act had been put in place during peacetime in Canada.
Critics, such as Laurier LaPierre, accused Prime Minister Pierre Trudeau's move to suspend habeas corpus as more of a reaction to the separatist movement in Quebec by criminalizing it.[17]
The Act's 1970 regulations were replaced by the Public Order (Temporary Measures) Act in November 1970, which subsequently expired on 30 April 1971.[18]
http://archives.cbc.ca/war_conflict/civil_unrest/topics/101-618/
In October 1970, tanks roamed city streets and soldiers in full battle gear raided homes in their hunt for "terrorists." They were looking for the Front de libération du Québec; French Canadian nationalists who abducted a British diplomat and a Quebec minister. Some felt like they were living in a police state. How far would Prime Minister Pierre Elliott Trudeau go? "Just watch me," he said. Three days later he invoked the War Measures Act and a nation waited with civil liberties suspended.