shaming the newest “Sports Illustrated” Swimsuit Issue cover model Yumi Nu in controversial tweets on Monday — has bailed on Twitter.The University of Toronto professor announced he was leaving on the social media platform, where he boasts almost three million followers — just hours after the uproar.While his account is still active, the 59-year-old wrote he will be “departing” the Twitterverse following the backlash he got for hating on Nu’s magazine photo shoot.“The endless flood of vicious insult is really not something that can be experienced anywhere else,” the “12 Rules for Life: An Antidote to Chaos” author tweeted Monday night. “I like to follow the people I know but I think the incentive structure of the platform makes it intrinsically and dangerously insane.”While his account is still active, Peter said he’s instructed his staff to keep him off social media.“I told my staff to change my password, to keep me from temptation and am departing once again,” he added.