power cycling USB powered device

Hi,

I've got a Falcom Samba 75 USB modem that I'm using on a system running 
netbsd-3.0_branch. I'm using it to connect to the internet with GPRS and 
I've got a script which loops to reconnect if the connection fails.

My problem is that at some point after a connection failure when pppd is 
restarted in the script to connect again I get pppd compaining about an 
"inappropriate ioctl for device".

It looks like the modem has locked up and only unplugging it, replugging it 
gets it working again. Now I know that the question about power cycling a 
USB powered device has been asked before some time back and there seemed to 
be no way of doing it from user space.

Does anyone know if its at all possible now?

Thanks,
 Brad