Welcome to the OB! As Fairorchid said, often when the spikes are cut, the plant can rebuild it's energy, and as I have experienced, when it spikes again, I would get double or more spikes, and no bud blast. What is your phal potted in? You said you had to repot it. Were the roots in good condition? As you will hear from other members here, what it's potted in, your light source, watering habits etc will determine the health of your plant. And losing lower leaves is normal. If this was my plant, I'd cut the spikes that have blasted, and let the plant gather it's energy over the next few months. Good luck
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