Sara Evans' Estranged Husband Jay Barker Gets Probation After Trying to Hit Her With Car

The husband of country music singer Sara Evans won't spend any time behind bars in his domestic violence case ... TMZ has learned.

The Nashville DA's Office tells us ... Jay Barker, a former Univ. of Alabama quarterback, ended up agreeing to a "best interest plea" in which he pled down from felony aggravated assault with a deadly weapon to misdemeanor reckless endangerment.

As we reported, Jay was arrested back in January for allegedly trying to slam his car into the car in which Sara was riding.

Cops say Sara told them she was in the passenger seat of a friend's car, leaving a party when she saw Jay gunning his car in reverse, trying to hit them.

Sara and her friend got lucky, though ... cops say Jay missed his alleged target.

Court docs show Jay was put on a year of probation as part of his plea deal ... and we're told he has to keep his nose clean, forfeit all weapons and complete a 26-week batterers intervention program.