Why do you believe the student intended to log the time? Just because
he was manipulating the controls? I'm not a pilot, or even a student
pilot - but I have done the majority of flying (operating the controls)
on many flights. I have never had any intention of logging that time,
and I have no reason to believe the student pilot in this case intended
to log his time. The student wasn't even flying with a CFI, so who are
you thinking was going to sign off on that logged time? Let's keep the
blame where it belongs in this case - with the PIC.

-Patrick