What are possible scenario's to account for the 42 min discrepancy between what DSII stated was the time MP arrived at his condo vs what the video shows? Why 4:00? What had he'd finish doing by then? Who did he call or visit during that time frame? This isn't a great deal of time, so IMO when YS called and he wasn't at DSSr's, he was finishing up. I keep rethinking the disposal scenario on the next day, but I'm leaning more towards going to work was an act of making everything seem normal.....part of a plan in motion.
Perhaps he left for work earlier than usual to allow time for extra curricular activities?