it is also possible that he was just working? my friend works in a uni and when things are busy she literally works till 10pm, plus weekends! and if he'd just been to india there was probs stuff to update his team/manager on. this pressure is usually the case when you're lower down in the company, you feel more of the responsibility cause you've got all the little bits and bobs to do, and don't want to let people down.
i acc don't think it's that unreasonable to be working a lot straight after a flight, that's just life when work is busy.
he then has a couple days off after to go see niomi's family with her so maybe he needed to get everything done before then.
the weird thing was the lack of communication/niomi's ignorance to joe's job, and her expecting that he would just have as much free time as her! did he not explain his work to her??
i also understand that he could have been avoiding her, but maybe more because he was busy and would be irritated at her lack of work tit to do, rather than because of cheating. imagine how little she does with her work day!!!
in saying that, i did also feel bad for her a lot in those two videos, the next couple are really nice though!