Did the algorithm change already, somehow?

Yesterday, while there was HUGE demand for BTC-swaps in the selloff to ~$260, the BTC-FRR sharply DROPPED from about 0.11% to 0.07%.

The only way this could possibly explain that imo is:
- FRR calculation model changed or
- someone accidently lent out a big amount of BTC for 0.01 instead of 0.1, or some similar mistake.