You are not alone.
I had 4 games running, 3 were counted as lost, which made me lose 60 arena points and about the same amount of elo.
I am quite sure that I did not have the longest thinking time, because these games all lasted quite long, and I was quite available during the last weeks, but I cannot prove it, because the games are still ongoing (and I am not going to abandon them).
But if I had (I had my sleeping times as well), well, then that's as it is. But I should only lose arena points for these games, not elo, that doesn't make any sense.
Furthermore, I was relegated to bronze, even though Gaia Project from somewhere mid-season was added a silver league, so it had three leagues, and I expected being relegated to silver. However, the silver league seems gone again, as now I have 9 points to go to elite. Will it appear again mid-season? Are there any rules on adding and removing leagues?