Need help with Hirose connector

Hi,

I have a hirose connector (a type HR10A plug with soldering cups).

One of this series...
http://www.hirose-connectors.com/products/HR10_5.htm

I would very much like to solder a cable to this damn thing, but I
can't figure out how to get access to the solder cups!

I give up, what is the trick? Obviously, I somehow have to force the
assembly that contains the pins out of the connector body so that I
can solder to it. But it seems that it won't budge.

Anyone have experience with these?

Thanks!
-A.

.