He’s not blaming anybody. Contractual obligations are contractual obligations. He got paid to go there, they’ve been paid by people expecting to rub elbow with him, this happens. People miss funerals because they have other obligations, it happens, funerals are short notice things, and smart folks know the living take precedence, the dead can wait until there’s a hole in your schedule.
The whole idea of what the Red Cross actually is (charity in time of crisis) went zooming right over your head at warp factor six. LoL!
Of course Shatner is blaming them, for not letting him go.