Jimmy and Valor?

[Lemminkäinen]

Valor has these two abilities:

Backup systems (perm) (1 BU), (1/round)
When one or several of Valor’s limbs have no more CP, it is only removed from the field at the end of the round. If before then any gaming effect grants it at least 1 CP to all the limbs that had none left Valor is not considered as incapacitated anymore.

Watchdog (perm), (1 BU), (1/round)
Allied fighters of Pilot type within 5cm or less from Valor earn the following special ability:
Insignificant (perm)
This fighter cannot be the target of an attack as long as an allied free Robot fighter is located 5 cm or less from him.

Jimmy has this:

Handyman (action) (1AP)
A Robot allied fighter within 7,5cm of Jimmy is healed by 1 CP in the limb of your choice.

This seemed to result in a situation where Jimmy can't be attacked and Valor can't be killed unless you incapacitate every one of his four limbs. Which seems somewhat insane. Can you go into negative CPs?