Severed tip of Phal spike growing a new BUD!

[InspirChid1712]

Recently I picked up a pathetic Phal. from the clearence rack at Lowe's. It had two spikes: one of which was bare, and the other had been broken off at one of the nodes and the broken end still held two fading purple flowers. I removed the broken end and placed it in a small vase of water, hoping to revive the blooms. Within a day, the flowers perked up, but then faded again by the next day. A few minutes ago, as I was preparing to dump the vase and toss it, I noticed a new bud growing from the tip of this severed spike! Has anybody ever heard of this happening?! I doubt the bud will reach maturity, but I know that some orchids are full of bizarre surprises! Any thoughts as to how I could help this new bud mature into a flower??? Should I perhaps add a few specks of bloom-booster to the water???