Justice Michael Lee said he would consider taking the “extraordinary” step of striking out the honest opinion defence of Alan Davison on the basis the self-styled citizen journalist insufficiently complied with court orders in a defamation battle against sharemarket entrepreneur Tolga Kumova.

The Federal Court judge on Tuesday labelled Mr Davison’s discovery process, which included additional submissions on June 30 and July 3, a “dog’s breakfast”. Tuesday’s legal arguments were dominated by the fallout from Mr Davison’s testimony last week, after he was ordered to travel from New Zealand to give evidence.