Ymb,
// Let him walk free... I dont reckon he would be around long, either by his own choice or vigilantes. //
That is remarkedly similar to Qatada's hate speeches. He said it was fine to kill American's, Jews. You say it is fine to let the vigilantes at this fanatical cleric.
But we live in a country that allows free speech so you are OK to air your views no matter how distasteful they may be.
I think I have asked you before, what crime do you think he has commited?