He and his attorney are even drafting a letter asking the court to prevent Lindsay from taking prescription drugs to jail with her.
PHOTOS: How Lindsay Lohan's face has changed
Michael insists Lindsay is addicted to prescription drugs (she denies it).
PHOTOS: Child stars gone bad
The actress,D&G, 24, must surrender July 20 to begin her 90-day jail sentence.
Lindsay Lohan says her F-word court manicure was just a joke -- but her estranged dad Michael isn't laughing.
"It's just tears me up," said Michael. "Especially to see that my wife, my ex-wife, is around her and not doing a damn thing to help her.
Get more Us! Follow us on Twitter, Friend us on Facebook, Subscribe to Us Weekly
"She should be in a rehab now," he says. "And what Dina should be doing, and I'm calling her out right now, is she should get the names of the doctors off every prescription,Ed hardy, every bottle, and she should turn those names over to the authorities for investigation."
PHOTOS: Lindsay Lohan's loopiest antics of all time
"I don't believe the jail poll was warranted," he went on. "There's measures she can take now that can put her in a better place if she goes to jail, or even help her not go to jail."
"It is stupid, it's insane, it's so dark," he said Thursday in an interview on FOX News Channel's Studio B with Shepard Smith. "Why would you do that, for what reason -- and not expect people to see it or word get out?"