If you look at the chart, it shows that everyone's still mining, but seems like the bot that exchanges the coins was down too increasing the number of unexchanged btc
Yep, there seems to be correlation between flatlined stats and the auto-trade bot. When we come out of a flatline we always have high unexchanged. This is logical considering that the recurring stats issue is caused by database I/O starvation and most likely his autotrade bot is running off the same db.