He reserved his worst vitriol for the administrator

Hi,

This is from an article about SAAB's bankrupt.

"Muller reserved his worst vitriol for the administrator, Swedish lawyer Guy Lofalk, who had been overseeing Saab's protection from creditors, which it entered in September."

I tried to rephrase the sentence above to see if my understanding is correct, but I am not sure the part underlined.

Could you correct my writing below?

Muller finaly gave his worst vitriol to the administrator, Swedish lower Guy Lofolk, who had been overseeing Saab's protection from creditors who entered in September.

Thanks,

Ryo