I have looked at that book. Somewhat smart. See, for instance this piece
http://www.samsonblinded.com/blog/?p=1 . There is unusual mix here, from Judaism up to terrorism and Israel's relations, but a substantially provocative thoughts. I see the reason why the right and the left together deride him. Part of the stuff Shoher writes is wise, some is not at all, and pieces mustn't be declared even if practiced. Interesting.