That honestly looks like over watering to me. I just survived something similar, or so it looks. My leaves still seem droopy at times. There is NO WAY mine are root bound yet, or I should be able to see roots on the side of the container. (My plant is 14 inches tall, and in a 4L ice cream pail. Uses 1 cup of water ever 3 days, and the room stay between 23-28 degrees. (That is in celcius which is what I assume you were using too?))

:wtf:Maybe I might be wrong