Here's the blog post and sample code. It's not "Spring-y", but it's "Guice-y"!
http://wanderingcanadian.posterous.com/guiced-up-gwt-requestfactory You are right Andrés. I've noticed the same behavior. Not sure if it's a feature or an issue though. Either way, it's something useful to know! -- http://groups.google.com/group/Google-Web-Toolkit-Contributors