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It hasn't been smooth sailing on the "Country Crusing" trip for Trace Adkins. says the singer, who was slated to be the headlining performer on the cruise, is now in rehab after getting into a fight on the ship Monday with a Trace Adkins impersonator.  The two met up in the bar, where the fake Trace was singing karaoke. 

No one is saying what sparked the fight, but it coincided with the end of Adkins' 12 years of sobriety.  Adkins left the cruise Wednesday when the ship docked in Jamaica.  The country star's rep confirms to "Country Weekly" that Trace is now in rehab "after a setback in his battle with alcoholism."  The spokesperson also asks the public to respect Adkins' privacy as he "faces these issues head-on." 

The impersonter and Trace have met before. Check out this video from when they first met back in 2007!

Adkins' cruise performances have been cancelled.  Other stars on the ship include Montgomery Gentry, Wynonna, Craig Morgan, and Lonestar.  The cruise is expected to visit George Town, Grand Cayman and Cozumel, Mexico before returning to Miami on Sunday. 

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