The 40-year-old's account was filled with an array of angry messages, one of which claimed that his "trolls" should be "locked up by the twitter police".
Ahhh the haters have all gone quiet now ! Obviously didn't like a bit back at em! Pussy's!— Lee Westwood (@WestwoodLee) August 12, 2013
Westwood later hit out at Barton, tweeting: "Joey . Back down lad. You can't compete! Not on just 80k a week ! Haha!"
Barton replied to the abuse by writing: "Right, got to go training. Twitter was fun this morning! 300+ blocks and A top sportsman, maybe tipsy and tweeting. Decent."
Westwood, who slipped out of the running following an opening round of 66 at the US PGA Championship over the weekend, later claimed that his account had not been hacked, but that he was just being "honest".