POST script via LTM causes RESET

Hi, one of our web developers has determined the following POST fails via LTM (BIG-IP 10.2.1 Build 511.0 Hotfix HF3)

 

 

http://med.stanford.edu/koorosh_files/post_test.html

 

 

But succeeds when posting via the apache node directly

 

 

Nothing is logged on the apache node for the RESET which makes me think its a BigIP issue.

 

 

Any ideas how to resolve this?

 

 

thanks