A resignation made out of grave fear.. is invalid by the law itself

An interesting question is posed at non veni pacem today.  See here.

Canon 332.2 of the Code of Canon Law States clearly that:

§2. If it happens that the Roman Pontiff resigns his office, it is required for validity that the resignation is made freely and properly manifested but not that it is accepted by anyone.

Canon 188 States that:

"A resignation made out of grave fear that is inflicted unjustly or out of malice, substantial error, or simony is invalid by the law itself."

At his inauguration, Pope Benedict XVI said, "Pray for me, that I may not flee for fear of the wolves."

Obviously the Holy Father said this for a reason.  If he was motivated by such fear to resign, the resignation would be invalid by the law itself.