Barker, now on tour, tweeted "My babies [sic] mama is a pile of sh*t," obviously referring to Shanna. ML has learned the two got into a heated argument after Barker and his nanny dropped the children -- son Landon and daughter Alabama -- at a home in Rhode Island where Shanna is visiting her family. A source says the police were called, but the argument ended without incident and Travis left. Of the scuffle, Travis said on twitter "Rhode Island police are cool as hell, thanks for keeping child molesters away. On my way to NYC."