Mike “The Situation” Sorrentino’s “heart is heavy” over a viral video of his “Jersey Shore: Family Vacation” co-star Ronnie Ortiz-Magro appearing to nod off while promoting the show last week. “I want to be clear that I am not responsible for the actions of any other cast member,” Sorrentino, who has been sober for more than a decade, began a lengthy Instagram Story statement Friday. After calling attention to “what Ron, a grown adult, chose to present during press,” the 43-year-old noted that the “situation is still developing.” Mike “The Situation” Sorrentino reacted to Ronnie Ortiz-Magro seemingly nodding off during “Jersey Shore: Family Vacation” press on April 21. SiriusXM Sorrentino shared a lengthy Instagram statement Friday. mikethesituation/Instagram He added, “While I do not know the full extent of what he may be going through, I do know it is separate from my path.…