Looking at the v0.12 branches of both iojs/iojs and joyent/node, it doesn't seem to me that idutny's latest commit (updating OpenSSL to 1.0.1j) was a commit to Node proper. I also can't find that commit in any other branch of Node, or on idutny's personal copy of Node (idutny/node).
In fact, the history of Node and IO.js seem to completely diverge after Nov 21, with no overlap between the commits or contributors. To me, this seems to clearly indicate that the committors in these last IO.js commits are also the people behind that effort. Am I missing something?