To add to my reply above:
I can see a manager having to be at work well before everyone else. Maybe Sat morn is the weekly schedule when managers do reports, scheduling etc? It would be easy enough for LE to check out if 8 is the norm, since that was his chosen alibi on camera in trying to prove he couldn't have had anything to do with CM's disappearance ("hey, I was up and at work at 8").
Of course, no question he wasn't at work from 8 and on, continuously, as he claimed for his alibi for the morning. Don't need logs, don't need to ask Sprint or other employees. He was in Allen getting gas at 10:15.
I'd guess he was never there until 11, but if he stopped in briefly around 8 ...
Then we can revise our speculated Saturday scenario, for him getting CM out of his trunk, and it might look like this...
1 leaves home at 7:30 and tells the fam he has to be at work at 8
2 an actual stop-by at work, getting there about 7:50 and staying til about 8:10
3 a 40-45 minute drive to find and stop at Place X, getting there by 8:50 or so
4 at Place X he slips off his work clothes and into something he can get dirty, then gets CM out of his trunk, and is away from there by 9:05 ...maybe it takes a bit more time here (which means we cut down on drive times a bit), if this is where CM hit, kicked, bit, and bruised the crap out of him as he took her out of his car trunk
5 next comes the drive back, which takes less time to drive going back because he's not driving slowly looking for a place ...added into the drive is a stop at a self-service car-wash vacuum ...all together, maybe 1:10 or less (allowing 15 minutes of rushed cleaning, and 55 minutes to drive past the Sprint store and on to Allen)
6 at 10:15 he's getting gas on video, and wiping off some spots he missed in his quick clean job
7 home around the corner by 10:20-25
8 at home, quick shower and change back into his Sprint logo outfit, out the door by about 10:40-45
9 walks in the door at Sprint around 11, looking like crap
There's definitely enough time there to do all that and be to Sprint by 11, and still a huge footprint around the Sprint store (including lots of shoreline area for 2 lakes) where she could have been left.