Completely understand your point of view and you may be right, Alan could have simply been in the wrong place at an opportune time.
However, even if Alan did "meet up" with someone that morning - he is still a victim of crime. To suggest Alan "would never" ... could be seen as a moral judgement in itself, because what if he did? I don't personally know him, so all I can do is speculate on the possibilities. Nothing is off the table IMO, because we have so few facts.
I feel awful for Rusty and Alan's family, waiting for answers is just so painful.