honkongairlines.com has been raising prices slowly last an hour, by a couple of hundreds of $ at a time. When I was about to buy, the site showed error message. Last half an hour, it got extremely slow and giving more and more error messages. bmorewards and expedia4TD both showing Philippine Airlines for same dates for $3K. Then I went to book on Priceline, I was able to book LAX-DPS 2/13-3/4 for USD 663. I got a ticket # and a reservation code, but hongkonairlines.com says their system is busy. At least for the same dates, Priceline still says the fare is available.
Thanks OP, and fingers crossed!