LOL, that stuff is used to clean chips once the HS has been removed.
Two ways to try and get it off. Put it in the freezer for an hour or so and twist it off. Second, use a hair dryer and get it nice and hot and twist again.
Ohh third... Get a can of compressed air, turn it upside down and spray the liquid right on the chip/HS/ bottom of the board. You'll use the can up fast, have gloves ready etc right away, it will be below 0 C for sure. Twist and hope.