I developed ActualVim using only a VT100 reference ( http://bochs.info/text/vt100.txt ) and `:help netbeans`
Eclim also happens to provide an Eclipse plugin that _embeds_ Vim in Eclipse, using the NetBeans protocol, just as you are embedding Vim in Sublime. The author of eclim is also very responsive, if you wanted to ask him about anything.
They're using a Vim script to extend the NetBeans protocol and pass arbitrary messages back with nbkey/keyCommand. I can totally use this. Thanks!
VT100 embed is their third mode.