It was there from early on: a kind of dread that stalks the Emirates now, one that says that all the accommodations made for this Mikel Arteta team – all the compromises accepted in return for that one precious thing – might be in vain. Are Arsenal about to blow the Premier League title? The possibility hardened over the course of a game that was tough going for those home fans who have rationalised what has gone before on the basis of what they hope is to come. Bournemouth took Arsenal apart at the crucial stages. Alex Scott, the game’s best player, scored the winning goal. This was the cruel game of football for once delivering rational outcomes – and no one among the home fans could find respite in referee conspiracy or bad luck. In one technical area, Arteta’s childhood team-mate from San Sebastián, Andoni Iraola, a cheerful, easy-going Basque, was giving his old acquaintance a tactical masterclass.…