[DonRotolo]

I am pretty sure they could send a command that pulses the motors forwards and backwards as quickly as necessary. (I think the motor speed is slower than we think)

I'm also pretty sure the guys who do this are smart enough to have come up with such an idea on their own; surely if they rejected it they know something more about the rovers than I do. (Heh. Even if they accepted it, they know more...)

Don