Possible Clues:

• Give the lie to root in U-turn
• Disprove one posting videos online is making a comeback? Not you
• Offer a counter argument backing Spud
• Deny criminal brute
• Raised swelling is to explode
• Deny claim about potato?
• Counter Murphy's raised, for example
• Answer to counter
• Prove wrong potato perhaps has been sent back
• Offer a counter argument to upset Spud