Yes brother it could ruin the bud, With those sort of humidity levels you could be leaving yourself wide open for bud rot, You really need to get those humidity in to the 50% or lower range, If you're using a humidifier can you turn it down? Or you could look at trying to extract more air from the room' I'd try to stay away from de-humidifier as this extracts moisture from the plant rather than the air, Hope this helped anything els just give me a shout bro anytime. GanjaDan