Four things....
1) He screamed, as he set off on his mission, "Get out of my house. Reeva, call the police".
Who screams in full sentences? No one. You can't. All of your puff is taken up by the scream, you can't come out with a string of words at the same time. At best you could manage one word or possibly two....but two entire sentences? And the words would be so distorted they would be hard to understand.
No, this (if it happened) was yelled or shouted. So if they weren't screamed, why has he used the word "screamed" in his affidavit? I wonder now......(strokes chin)
2) If he got up to bring in the fans because it was such a hot night, why did he immediately close the windows, blinds and curtains? I can't think of a better way to make a room hotter if I tried.
And why did he wait until after he'd extinguished the only source of light (from outside) before plugging them in and switching them on - an easy thing to do with a bit of light, very difficult in pitch black.
We know he did this because one fan was plugged in but not switched on....so he must have been disturbed by the "intruder" in the act, and he already told us this happened after the curtains were closed.
3) The jeans: They do look freshly laundered as some of you have pointed out. Although the belt through the straps would suggest that they have been worn, if only briefly.
Reasonable explanations could be: there's a washing line nearby that they fell off or they were left there accidentally by Reeva earlier when she went swimming. In which case, it's irrelevant.
But I doubt either of these are the true explanation, because Nel showed them for a reason and it can only be because he plans to raise the matter with OP (and he can't really ask about things without introducing the evidence for them...same goes for the broken door and window, I suspect). He's hardly going to bother if they just fell off a washing line. And I think his drawing attention to them must mean that they are actually Reeva's.
So - they got there by some less understandable way, probably. I think they must have come out of a window.
Why would Reeva be drying clothes out of a bedroom window? Has she just washed them there? Why, when there's a fully equipped laundry room downstairs?
If she was just rinsing off a little stain, then again....why do that in the bathroom where there are no laundry products?
Is she just airing them? Who airs their jeans? Really...who?
I think they were probably thrown out. The only non-sinister reason I can think of it that OP did it to tease her, in which case one or other of them would have retrieved them.
What woman willingly leaves a pair of jeans outside overnight? She didn't have a lot of clothes with her, so she'd have needed them.
I think he either threw them out in temper, or she did to try and get someone's attention. No other explanation really makes sense.
4) Why....really, why, why, why.....on a very hot night did two young, good looking, new lovers go to bed with their clothes on? Because it's not only that Reeva bizarrely decided to sleep in her exercise clothes, but OP had shorts on too.
Hardly modesty, because I'm sure they've seen each other naked before. If they haven't gotten intimate in that way yet (and I think that's unlikely given that neither are virgins and ST said OP had cheated with Reeva) then why are they sleeping in the same bed? And it can't have have been to keep warm because it was a particularly hot night.
If Nel is as good as people say he is, he should easily be able to make mince meat of this stupid story.