A thug stabbed fellow guests with a corkscrew when he went on the rampage at a hair salon party.Two men needed hospital treatment while Nathan Campbell fled to Spain after the “utterly unprovoked” attacks.Campbell, 24, of Troon, Ayrshire, was jailed for 21 months after admitting carrying out the assaults in nearby Prestwick on August 3 last year.Hamilton Sheriff Court heard the violence flared during a party at hairdresser David Armstrong’s Main Street salon.Revellers had been enjoying the town’s annual music festival, Prestfest.Campbell admitted assaulting Lauchlan Tait and Gordon Graham to their severe injury and possessing an offensive weapon, a corkscrew.Prosector Kim McGregor said the party had been organised for family, friends and