`(a b ,x ,y c d) is an abbreviation for (quasiquote (a b (unquote x) (unquote y) c d). The quasiquote returns a literal list, except that whenever it encounters an unquote or unquote-splicing it hops back into the evaluator and evaluates the form in the local environment.
Flash load() is probably your best bet. My startup has a similar problem - dynamically generating code that will run in a browser - and we eventually decided it was easier to go with JavaScript/eval than Flash, even though we have to support Flash anyway for the finished product. Our other option was to send the code back to the server through Flash's XMLConnection, compile it there, returns a URL of the compiled SWF through the connection, then loadSWF() it and hope we can figure out how to dynamically reference the new classes. Check out MTASC for the server; Macromedia's Flash Compiler won't run on the command line.
Or you could just punt on the dynamic features. I don't support continuations in ArcLite, and I know someone doing a native-code port that's planning to leave out a few of the more dynamic features. Beware that I found (= ...) doesn't work if you leave out (macex ...), though.
