I've chased enough thieves on foot to know that 95% or them usually drop what they took within 20 yards, especially if it is heavy or awkward to run with. If it looks like I can still catch them, I may keep going. Done it before. Misdemeanor charge if they don't escalate it, I show up to court long enough to hear them plead guilty or plea, if it even goes that far.
Yeah, there's a risk it might turn really ugly, and another risk after that, that I may end up getting charged.
That [it turned really ugly] means that the BG did present a clear and present threat to my physical well being - READ - JAM was met in full and then some, and I had no other options. In CO that will go a looooong way in my defense.