I don't know about anyone else but the dental floss idea didn't work at all for me, the floss interferes with the pins.
I had this idea on how to remove the chip easily, but I haven't tried it. Just get some strong epoxy and glue onto the top surface of the flashrom something to act as a handle. After it's dry, use that to pull the chip out.
JB Weld might work.
-Dave