srnity: Your suggestion of resigning is probably the reason why some players abuse the vacation system: perhaps they hope to artificially inflate their win totals by goading their opponents into resigning out of frustration.

TarantinoFan: While I share your frustration with such unscrupulous behavior (autovacation is probably the most ill-conceived feature on this site), I think the best you can do is to grin and bear it. His vacation days will run out in a couple of weeks. After that, either he'll play and you'll have the game you signed up for, or he won't and you'll have a much-deserved victory.