Cao, Victoria, I've had now four authors contact me anonymously, all with the same stories of ARCs not going out, verbal and written abuse by Derek for any author asking questions about why their books aren't being marketed and why he's spending more time marketing his own book.
There are concerns about royalties, and he refuses to send out royalty statements that would put those questions to rest. Their contracts state that if authors make less than $25 in a period, no statement will be issued If that's what the contract says, that's one thing. But where you have a group who is concerned about his claims that returns canceled out royalties (which is perfectly legit), a simple royalty statement would quiet those concerns.
I've seen emails where he verbally abuses the author, accusing them of not promoting their books, and threatening to take their titles out of print. Sure, if a book isn't selling, OP is a viable option, but I'm shocked that any publisher would talk to their authors in this demeaning manner. If an author asks questions, Derek either ignores them, or he sends a very nasty message.
The authors I heard from today said that he's not talking to any of his authors right now. It's all so sad. These guys were lauded by PW and named Foreword Publisher of the Year. From what I've seen, it's an illusion, and his tactics are frighteningly reminscent of a certain vanity publisher who is famous for the same kind of behavior.