I actually agree, Victoria. A lot of it is knowing my agent and trusting him and knowing other clients of his and seeing him fight for them. I also, personally, like that they're allowing the option, which is how I see it.
I do think it does open up the potential for abuse, but in this case I'm not concerned and I don't actually see this as the agency acting as publisher in the sense that some of the other agencies are doing. I've also seen three agencies this week mention similar things, though DGLM is the only one that's made an official announcement (Kristin Nelson is supporting a client in self-publishing, no idea in what function or how involved, and Rachelle Gardner's agency is workign out details).
This is a tough one because I think agencies will feel the need to offer something to clients who wish to take this route, and as a writer I like the idea of knowing someone's got my back. As you said, though, it does open the door for unscrupulous folks to be unscrupulous.