Ive posted in the accomplishment thread before but not recently but just saying its UOcR straight away is a rather large leap here. Those times you found are only official ones and so do not reflect peoples averages as well as those who have not competed (myself included).
Hand scramble here refers to the fact that the sequence of moves you applied to the cube in order to scramble it appear to be random spamming of tps as opposed to a computer generated scramble (the typical scrambles used when claiming unofficial records of any kind with the possible exception of 6x6 and 7x7). With your scamble you have a very easy cross with some short inserts for f2l which could be due to the fact it is a hand scramble.
Rapid progression with feet solving is not uncommon as well as when i posted for the first time about it in the accomplishment thread i had never done any before that day and after not many solves already had a sub OcR average of 5 (i know this is not the official format but i prefer it over mean of 3)
Im not claiming that i am the fastest in oceania either by the way as there may be someone i dont know about whos faster, but your solve is not UOcR (ill have to film some feet solves to get the YTUOcR)