Hello bro, could you provide a picture? Will try to help you as best as i can.
From the sound of it, the anemone seems okay and in the pink of health. feeding, coloured up, stickiness are all good signs.
I'm just curious to know the white strings. A picture will help.
Btw to remove the anemone from a rock, use a long blunt instrument and prod at the edges of the foot, alifting it up gently and go around the circumference. the anemone should release it's grip. I like to use a long plastic spatula. I'm not sure where you can get this though, i got it from my school's lab. But any long and blunt instrument will work fine, like plastic tweezers.