Just came across this:
Seems Dimitrenko is working with Tommy Brooks. They're eying a comeback fight against TBA in December and will work towards a title shot in 2013. Brooks says he found many flaws in Dimitrenko's previous style and says lots of work needs to be done.
After 1-2 tuneups I think Dimitrenko needs to come out of his shell and maybe challenge guys like Fury/Helenius or get a rematch with Pulev (if he loses his title shot vs. Wlad in 2013).