Perhaps, it was like this by design. Since late Sept., early Oct. it was very obvious, undelegated and sold everything then. For me, it was obvious, it's a scam. When maddogtime, watchlist account network manipulated the daily DVS drop after staking, it got totally screwed and nothing happened to stop them, ban them, make a 'fork' based on earlier balances.
And other big delegators considered it as 'market capitalization'... :) not manipulation. So it's very suspicious. There is a real chance, the hole thing was a collusion by some of the big delegators. They all stopped delegation months ago, asap got huge DVS, and they kept selling it to the small guys for months... the greed factor...
Perfect example, why Hive will fall, but definitely won't be a winner!