"After seeing promise and thanking God for Lindsay's freedom from Samantha's bondage, I see now, that since Samantha has once again, weaseled her way back into Lindsay's life, things have taken a dark turn," the New York Daily News quoted him as writing.
"Like I said in the past, 'if I see or hear of anyone or anything causing harm or is seen as a threat to my children,' I will speak about it, and do anything I can to try to intervene regardless of the repercussions on me," he stated.
The reason Lohan's dad was so angry was because the Mean Girls star had allegedly left her little sister in Los Angeles to join Ronson at a DJ gig in Boston. "Was this again, a means for Samantha to earn more money through Lindsay's presence?" he wrote. "Is Lindsay so blind?" he added. Michael also wrote about his 22-year-old daughter's lack of acting work, recent weight loss, and alleged self-harming.
"When a mother or father sees their child in turmoil... are we supposed to stand by, remain silent and pretend it isn't happening? Or are we suppose to step to the plate and not care what people think, and do something about it?" he wrote. Asking fans to intervene, he added: "Help this wonderful, good hearted and gifted young lady to see what Samantha is doing to her and how she is destroying her life."