Shanna Moakler took an obvious dig at her ex-husband, Travis Barker, with the title of her new memoir. The model, 51, announced Monday on Instagram that her memoir is called “Blink of an Eye” — Barker, of course, achieved fame after becoming the drummer of the band Blink-182. Moakler explained of the title, “Life can change, in the ‘Blink of an Eye.’ Hopefully my reality, reinvention and surviving some rough waters can make your journey a little easier.” She continued, “From a small child with big dreams, to co-parenting my children in today’s celeb obsessed climate… I’m self-publishing my memoir, my way. And hopefully the lessons I’ve…