What if the summons don't listen to him, like Hashirama and Minato? They'd end up rebelling.
I remember there was something about whether or not Orochimaru could not control Minato. Someone said he could control Minato, but not Kyuubi.
Obito not controlling the 5 Tails was used as proof and I accepted it at the time. But then I realized Edo Tensei 's control wasn't being used there, Obito's Jutsus were. Kabuto wasn't controling the Bijuu at the time.
So I have the question again. If Orochimaru can control Minato, who can control Kyuubi, wouldn't that mean Orochimaru can control Kyuubi through Minato?
And to actually answer your question, then oh well. The Jutsu's a bust, a backfire. It'd be similar to Deidara getting caught in his own C4. But they can still always control Edos through the talismans.