Census Johnston, the Toulouse prop, has revealed that Samoa's players received a series of warnings from officials after their threats to walk out of this weekend's autumn Test at Twickenham.The 33-year-old front-rower said Samoa feared next year's Test visit of New Zealand to Apia would also have been in doubt had the squad gone through with strike threats.Johnston said Samoa's players have only relented on their planned strike action to safeguard crucial future opportunities for the country's rugby-focused economy and public. \Yeah