I've always wondered if we could mitigate this issue by burning the spacecraft into a parking orbit around the L2 Lagrange Point on the far side of the moon usi

I've always wondered if we could mitigate this issue by burning the spacecraft into a parking orbit around the L2 Lagrange Point on the far side of the moon using conventional propellant, and then beginning detonation there. Irradiating Earth is of course a bad idea, but the Earth Moon L2 point should be plenty far enough away, provides a stable spot from which to begin pulsing in whatever direction they like as the moon orbits, and has the added benefit of the moon itself acting as a shield for the Earth from the radiation. It doesn't really matter if we irradiate the hell out of the far side of the moon. It's been pelted by solar wind and cosmic radiation since time immemorial. A bit of radiation from a few nukes should be negligible by comparison.