That is exactly what the diehard fans liked about the Empire Stikes Back.
If Lucas is smart, he have a scene where Anakin does the 'force choke-hold' on Jar Jar. That will guarantee ticket sells all by itself.
If Lucas was really smart, he'd not only have Anakin doing the 'force choke-hold' on Jar-Jar - letting the audience think Jar Jar is finally going to get it. But then to have Anakin kill Jar Jar with such brutality that even the most die-hard Jar Jar haters will stop cheering and go silent, actually feeling sorry for Jar Jar. Thus proving that Anakin has completely gone to the dark side and is truly, truly evil.