The bottom bracket I am trying to take out is on a Trek Tandem. It appears to be the same BB found on Trek's Soho model bicycle.

The bottom bracket looks like this....

I have removed the bottom bracket spindel and bearing case. The only thing left in the frame is the eccentric BB shell. I loosened/removed the main bolt but now I don't know what to do. I tried to hammer it out with a rubber mallet without success. The drive side of the shell has two hex head indentations but they don't seem to do anything. can anyone help me out with this problem?

Thanks in advace....