Don't make science up, rather research and understand how drs works. There is no modelling going on here, the only data point that matters and which is in the hands of analysts sitting there is the exact point of impact. From there the software calculates projected path and it gives only one result. Yes DRS can be manouvered as there is an explicit human process involved in marking the exact point of impact. And how that matters, well the ball is round in shape and one partial rotation between 2 frames could change the trajectory projection and it's upto the human sitting there to pinpoint the exact frame when ball hits the pad. I am not saying for one second that someone manouvered in this case, it could very well be that while they were still figuring out the exact impact point on their software, tv screen showed one result whereas they would have decided, in their wisdom, to change the impact point frame while taking the final decision.