Brush up on his chase game? Well he had never quite been a player. He was too duty bound and honorable to play these games. These games, which required lying, cheating and other things which Shacklebolt was just unable to do. Robert was right in one thing though, the students needed help, and it surely wasn't about to come from the ministry. They would be taken to St.Mungos, but Kingsley wanted to help anyways. Still, there were a couple of matters to complete here, and Kingsley would not leave until Grindelwald was gone too.
If Doyle had not cast Fiendfyre over his own castle, Kingsley would have had an easy side to stand by. But the fool had, so he could not argue that Hogwarts be left in his control completely. "This is hardly the time for job offers Robert, but I must refuse anyways..." Shacklebolt replied with cool courtesy. "I have no intention of serving in a Ministry that has brought dementors back and is infested with Death Eaters and disloyal members. Sorry. Oh, and if you want to have trustworthy people around your daughter, you should consider firing Majere first, then the Dents, and every other ex-death eater you employed."
"I commend your efforts in helping the students, but I don't quite see why we must leave. We are merely protecting the castle. If you want to banish your protection, then you are a fool." Shacklebolt was not taking his eyes of Grindelwald. Robert might be smart, but Grindelwald could outsmart him. And besides, the ministry was surrounded by his ambitious aurors, who could sell him out for some more power. He was hardly safe, which was why Kingsley was remaining here.