Na, don't cut it off as it will have no upper leg to crawl on, or pull itself, and it would loose total balance. Clean out the cricket tubs, and disinfect them, to stop furter disease or infection spreading up the arm. I have a bottle of tamodine, antibacterila, although it is strong stuff, and a very large bottle. if you bring it into school, or if we see eachother someother time, I can put a bit on, which will definately stop any infection. Also, take the cocktail sticks out of the creobroters, as I tried that with small sticks, and they kept snagging their abdomen edging, and with cocktail sticks, they may well cut themsleves. Just let them lay on the side fo the tube, and the are very easy just to slide off the side, and string up to incubate.
Cheers,
Ian