Mate well done covert Ops, I like it i would break the feckers fingers obviously using minimum force in self defense as he could of attacked you ... you have 1 witness there that seen it... im sick of the attitude of people, hand them over to the Police, that would be all fine and dandy if something was done about these theifs, but nothing happens, he is on you property and in my eyes is a threat..... you should of made him eat the foam a bit harsh tuff..
Regards
Chris