Hm.

This is where I wish we'd got control of the Floo system. Would be nice to be able to take him offline.

I wonder... there could be a way to sabotage his fire. But it'd be bad to fall out onto his hearth by accident. Or, y'know, blow up the chimney and blow myself to bits in the process. So maybe not. Putting that on my list of things to get the twins to look into, though.