I don't know what they did, but today in all my duty finder runs for titan today, I didn't get hit by the quicksand even if I just barely made it out. And this is on a JP server from the NA. However, I was playing dragoon instead of scholar this time. I had to move early to avoid them as scholar. I will try as scholar after work today and see if is better for that too. It might just be some lucky server stability.