Adam Clarke on Ezra 6:11

Let timber be pulled down - Whether this refers to the punishment of hanging and gibbeting of whipping at a post, or of empaling, is not quite clear. In China they tie culprits to posts; and the executioner cuts them open while alive, takes out their bowels, etc. Empaling, thrusting a sharp stake through the body till it comes out at the side of the neck, or hanging, seems to be intended here.

Let his house be made a dunghill - Let it be reduced to ruins, and never more used, except for the most sordid and unclean purposes.