I'd say it's nice to meet you, Shepard, but it seems odd saying something like that when we haven't really met. Insofar as threatening me goes, you can certainly feel free to do that if it makes you feel better but I'm not inclined to help someone who is making threats they've really no means of carrying out.
As for what I meant, I'm not sure how much clearer I can be. Each of us is an 'anomaly' in that we deviate in some way from how we were meant to be in the reality we come from. So the person you're talking about may well show up but may have deviated in some other way, which would make them a different version of that same person entirely.