So while I was re-arranging my room I sat my bamboo in the window not knowing it would hurt it so drastically. After a few days I removed it and noticed a slight yellow mark on the end of the stem and figured the plant would recover. Now it has evolved into this and I am wondering if I should just cut off the entire stem that is yellowed, and if yes how will the plant do that it will then lose 50% of it's leaves and will it ever grow a new piece?