Greg Hardy is breaking his silence on his recent domestic violence arrest ... insisting he and his family "are all perfectly fine" -- despite the disturbing allegations that were made against him last week.
Hardy took to his Instagram page to share the update with his followers on Tuesday ... just less than a week after he was thrown behind bars for allegedly getting physical with his girlfriend during a dispute at their home in Richardson, Texas.
Hardy shared two videos and a picture of him getting cozy with his family .