[RADIATOR] Combining AuthBy ldap2 and AuthBy yubikeysql

[jm]

I'm currently evaluating Radiator to see how suitable it is as a two 
factor authentication mechanism.  The current test, that I'm stuck on, 
is to authenticate a two factor password ( given in the form static:otp 
to the server) against two different sources. The static part against an 
ldap server that already exists and the dynamic OTP part against the 
mysql back end. So far. I've been able to,

1) auth the yubikeys against a mysql database using AuthBy YUBIKEY.
2) auth static:yubikey against a mysql database using AuthBy YUBIKEY.
3) auth a static only password against ldap using ServerChecksPassword 
using AuthBy LDAP2

When it comes to attempting an AuthBy LDAP2 followed by an AuthBy 
YUBIKEY I can't see anything in the documentation anything about how to 
split the password into parts. I found TranslatePasswordHook but this 
seem to be predicate on the password being in the ldap database rather 
than being called before the bind attempt. Is there a command or a hook 
I can use on a per AuthBy basis to split the password?

Jeff.