Uninstalling Exchange 2010 manually

Hello,

we have exchange 2010 server on windows 2008 server and
having problem with uninstalling.

This Exchange 2010 is newly installed, however it needs to be
uninstall tho, uninstaller cannot allow me to uninstall Client Access Role
and Hub Transport Role.

Is there any way I can just uninstall manually using ASDI?
this server can be wiped off completely, so what i need to do is
just clean up active directory.

any advise, suggestion would be very appreciated.

Thank you very much in advance.

Regards,

Takeshi