Mike 'The Situation' Sorrentino Indicted for $8.9M Tax Crimes

That's a situation all right.

A federal grand jury on Wednesday indicted Jersey Shore alum Mike "The Situation" Sorrentino and his brother/manager Marc, alleging they did not pay taxes on $8.9 million in income.

THE SITUATION Checks into Rehab

"The Situation" is in rehab for substance abuse ... TMZ has learned.