But the give way to landing aircraft rule is in the context of an aircraft on the ground not entering the runway if another is landing - it doesn't apply to one already there! After all, that aircraft has just landed and whilst still occupying the runway is (IMHO) still 'landing'.
So far as getting to one side of the runway to let him land is concerned, whilst this might be the only practical proposition, would you trust this nutter to land bang on the centreline (and stay there)?