Someone just lost $1,134,905 (~3029.40 ETH)! 28,050.04 AAVE lost forever, transferred to contract itself https://t.co/mir85gRptd
— TokenOops (@TokenOops) October 19, 2020
The key here being that the AAVE was transferred to the address of the contract itself, and not another account...
It would be like mailing a letter to the post office's address instead of the address you wanted to send it to.
Only there is no "return to sender" option.
— Chase Wright (@mysticryuujin) October 19, 2020