I was the victim of a hit-and-run the other day. I saw the guy and his car. Luckily I took a photo of the car, but it was from behind and he wasn't visible in the photo. When I talked to the police, I told them that I knew I would be a terrible witness. But I was able to tell them my basic visual impressions of the driver (which could have been wrong) from the brief encounter. I didn't trust myself on the exact time, etc., so I referred to my phone, the time the photo was taken, etc. My memory is worthless (mommy brain morphed directly into early-onset Alzheimer's [joking, I hope]), so I know I have to rely on tools, like my cell phone and notes. If I was in JW's position, my mind might go entirely blank, but I would ask if I could refer to my phone to be sure I got the answers right. If I had already discussed the events with a co-worker, my memory might be fresher and more reliable, but I'd still want to check myself with an objective witness - my text and call records for example. I find it hard to believe that JW texted SS back on Wednesday night, but told LE that he wasn't asked to make the delivery until the phone call on Thursday morning. Those are different interactions. It might make sense if he said he was called Wednesday night, or texted Thursday morning, but even that is a stretch to me. He had plenty of time after learning about the fire to go over the texts, call log and voice mails, to recreate what had actually happened from his end. I feel there was deliberate deception on his part because he actually made up stories of how he delivered the money, rather than omitting information. I can understand omitting the Wednesday night text more than I can understand him telling LE that he found a key, unlocked the car, put the money in the car, relocked the car, etc...
This is not to say that JW is involved in the crime, but that if he was lying, he had to have a reason that he thought was more important than helping LE in their investigation.
JMO