I can't separate the drive shaft from the differencial in my 1993 525i BMW?

[bubbles40d]

I removed the six bolts that connected the drive shaft from the differncial and I can't get them apart. Can anyone with any information please let me know.
Thank You
I call it the differential but I am not EXACTLY sure that is it's name.

 

[Dennis]

The two flanges are rusted together, try a hammer and sharp chisel .

 

[JonWelsh]

Hey man about a year I had to repalce the clutch on my 325i it was also a 93.. and I had the same problem u did. I ended up taking it in to have it taken apart cause it such pain in the ass trust me BMW don't like getting taken apart I kno lol