Sammy Wilson Quits as DUP Chief Whip, Critical of Party's Power-Sharing Deal
• Sammy Wilson has quit as DUP chief whip at Westminster
• Wilson has been critical of the DUP-UK government deal to restore NI power-sharing
• He accused the government of being "spineless" in dealings with EU
• Wilson teamed up with Lord Dodds and Lord Morrow to criticize the deal
• Wilson's resignation could deepen rifts within the DUP but he remains a party officer and MP