If the current evidence from the both the PT and DT expert witnesses correct then with the above scenario I'm left holding a mental picture that I find so very hard to believe. Much harder than believing OP screamed like a woman.
I have to imagine that OP was arguing with Reeva whilst on his stumps - that's a whole 4ft tall, for a guy that supposedly likes to be in control and domineering. Rather than steadily moving down the corridor to maintain his balance as he would be in an intruder situation, he's running after Reeva in a waddling fashion through the bedroom, along the corridor and into the bathroom, whilst trying to remain upright. Whilst doing this he has to hope that neither Reeva stops running or he stops waddling, as if he has to stop without anything for balance he simply falls over. He also has to make sure that he doesn't come into contact with Reeva as again, he'll lose balance and his best laid plan will be scuppered as he lies on the floor.
He can't push or move Reeva anywhere, as guess what...he'd fall over. Once he stops moving he has to lean on something, that is a simple fact. It then would become necessary for him to request that Reeva take herself into the toilet, or wait while he uses her for balance, and then follow her into the toilet. At any time from wherever the argument started, Reeva, who is quite an athletic girl herself, could move her hip to the side and send OP tumbling. A simple push with one hand would do it
Now, it may be difficult to imagine OP screaming in a high octave, but if I'm thinking in terms of probability, the threatening but waddling OP is gonna come second every single time.
The waddling explanation isn't meant to be funny - it's realism.
Once you get over this it helps to understand how ridiculous this scenario appears.