Generally speaking, what I learned in copyright class was that you own your words unless you specifically don't, and not the other way round. Unless you gave up the right to those words someplace in the fine print, they're your words, and you've got the right to enforce copyright on them.
(You all remember that foofarah over Yahoo's TOS in 1999? It was because a change in their legal language, designed to deal with every time they transfer data from one server to another when distributing server load, was vague enough to imply that everything Yahoo handled, email coming or going, web sites on Geocities -- the copyright of that item was, by dint of passing through Yahoo servers, transferred from the copyright owner to Yahoo, in perpetuity. Needless to say, people raised a ruckus, and Yahoo fine-tuned its legal language.)
Whether it's worth the hassle of hiring a lawyer and hauling someone into court over, I don't know; but yeah, you've got the right, unless you gave it up already.
Natter 25: Coming into my inheritance.
Or am I the only one who reads too many 19th C novels about shallow cads?