Looking at the whole mob scenario....
Leaves work, goes to Arrow, worried look is "I wonder if they followed me or will catch me before I get away", gets the money, goes home puts everything in it's place, leaves with a pre-packed "get away bag", misses IM "can't get her involved in this" goes to the station, puts the seat forward to get out the bag, hops train out of area. No ID to be traced. Keeps the car key as a memory of the car and tosses the rest in a convenient trash can.
The missing person angle may be that he really is missing to the family, or something to throw off the mob and keep them off of the family. No contact so that he does not endanger his family.
LE is tight lipped and has clamped everyone else involved down because they have evidence, know where he is or are keeping things tight until they do know where he is so that they don't tip off those looking for him.
It's still an outlier theory for me....bit it does seem to fit what we know...