Okay, that’s a melodramatic way of putting it; apparently he had a transient ischaemic attack or mini-stroke — one so small that he didn’t even notice it while it was happening — which has affected his hand-eye coordination.

Full details available at this Daily Mail article.

(Somewhere, a seven-foot skeleton in a robe is muttering, DON’T LOOK AT ME; I DON’T DECIDE HOW MUCH SAND GOES IN THE HOURGLASS.)