Whew...that was a close one Tob.....not trying to lecture you but I never let either of my 2 girls out of my sight ever when they are outdoors.
In my opinion, your breed is similar to many I have seen with urban hood types....the kind who think nothing of stealing property from anyone else no matter who it is or what it is. My guess is they made the attempt and then failed due to poor planning and/or execution.
Glad he is safe.....belly rubs from my 2 girls!