Muaythai does have it as a technique. There's the "chorakee fad hang" which is like a spinning hook type kick. The other one, the name I can't remember, but it's something like "deer turns it's back". Thats the thrusting back kick.
The old Thai Ch. 7 shows used to have a segment on muaythai technique. They had Kru Tui from Sit Yodtong demonstrating. I have old tape footage of him demo'ing both of these. As far as actual fights-Jomhod ko'd Aussie fighter Luke Kempson with the back thrust kick, and Coban, believe it or not, used to throw the occasional spinning hook kick. Also, Somluck Kamsing, the master of the unorthodox, would bust it out, too.