FYI... Unless the info is wrong there's the 4:15AM phone call that JR claims was LS using his phone. So that would tend to muddy the chances of him being wrong about her leaving his place at 4:30AM (since the time of the call would be easily verifiable). Assuming he's telling the truth about that morning, and assuming the info is correct and that call was verified as 4:15AM, then there's not much chance he could be wrong about the time she left his place (at least not in the chance it was prior to 4:15AM (the time of that phone call)... obviously whether it was 10 mins later or an 1hr later would be subject to memory).