The NYT made note of this a few days ago. Martin Schraeder <mschreader at npns.org> of the Socialist Party in Michigan has done alot of organizing against the Diebold machines. Asked him about the Venezuelan recall. He said he knew the person who wrote the source code. From others who know Martin in person (Trot friends) I've acquired some skepticism about Martin's claims about other things (the obscure left sectariana I love mostly), so fwiw.
From another source I read that the Venezuelan government has a financial interest in the company that sold these untested electronic voting machines.