The sudden but inevitable resignation of Mark Latham as Labor leader poses much deeper problems for the ALP than merely finding an electorally-appealing alternative to John Howard as Prime Minister. If that is all that the Labor Party does, it will be shuffling deck-chairs on the Titanic.Labor’s defeat in last October’s election owed something to Mark Latham’s arrogance and wilfulness – encapsulated in his deal with the Greens over Tasmanian forests to secure Green preferences, the imposition of…