Romenesko has the entire agreement. I see no provision distinguishing whether the employee terminates employment or the employer does.
http://jimromenesko.com/2012/01/10/halifax-media-tells-new-employees-to-sign-non-compete-agreement/?fb_comment_id=fbc_10150480658694952_21673933_10150480955999952#f26c818f8897106
http://jimromenesko.com/2012/01/10/halifax-media-tells-new-employees-to-sign-non-compete-agreement/?fb_comment_id=fbc_10150480658694952_21673933_10150480955999952#f26c818f8897106