After a chat with a friend from my writing group at this year's AnachroCon, I went and changed The God of the Wet Wood back to The Thing in the Woods. Although the title is rather generic-sounding, there was the danger that due to the rapid growth of "monster erotica" (so much that I actually found a small press willing to publish it now), somebody would think a book combining "god" and "wet wood" was something rather raunchy and not, you know, the teen Lovecraftian horror novel that it actually is.
Oh well. My writing group is going to go over the whole manuscript tomorrow night and maybe they'll come up with some ideas for a better title. One group member suggested I call the novel "the rough beast" (an allusion to Yeats' "The Second Coming," my favorite poem), but the title doesn't really fit well with what the monster actually is.
One reason I picked The Thing in the Woods is that the phrase comes up in the text of the novel in a significant way (not going to say anything here due to spoilers). Any new title would need to be similarly relevant to the text.