One of the weirder disputes to bubble up in the lengthy history of animus between the East Hampton Town Trustees and the town board came to light two weeks ago with the disclosure that Town Hall had sent the trustees a bill for cutting up and hauling away a dead whale after it washed up on the beach on Jan. 13. Though the affair is odd at several levels, it may have a hidden benefit for the trustees, one that may make them actually eager to cover the $7,500 cost even though they had nothing to do with it.