I didn't cut anything back because I was seeing growth at the end of the stem. It is now blooming on the end, but the rest of the stem and branches are dormant. I hope it's not because I removed the flowers instead of waiting til they fell off naturally. The spikes aren't yet completely decayed so maybe I should wait and see? I'm just thinking, since the end is active, the rest should be showing some change but that does not seem to be the case.