Per my screenshot and the posted rules, I should have already won...
My post was at 5:55pm, and his was at 6:00pm.
As per the rules "The highest bid at the closing time listed above will win. If there is a bid within 5 minutes of closing time (original or extended closing time), the closing time will be extended by five minutes. A bid at the closing time is NOT a valid bid."
Pacmartine's bid was at 9:00 (closing time) and normally an invalid bid
Rainman Trail's bid was at 8:55. If this is considered 'within 5 minutes of closing time' then the auction would have extended to 9:05 thereby allowing Pacmartines bid.
This is my reasoning at this stage, happy to be corrected