I'm just saying "it either held" (in a hold) or didn't get there at the time specified. (Or "wasn't it"
Where is there? If it's 19:41, there is no need for flying in circles. That time works out with no problem, the location is near 2°38'57.58"N 94°42'33.49"E.
If it's the terminal spot you mean, the where is the question. There are a lot of possible solutions for that. As many solutions as there are discernible speeds. But to where?
The dropbox pix is a non sequitur, it shows the flight path over Indonesian territory. We may not know everything, but we know for sure it never overflew Indonesian airspace, especially Indonesian landmass. That flight path puts the plane almost directly overhead of the Indonesian radar at Lhokseumawe.
The flying in circles premise is utter nonsense, there is no indication of that, there is no evidence for it and it makes no sense. The "sighting" you mention was investigated and came to nothing.