When to stake flower stalk?

[Joseia]

Last December I bought my first phal - it was one of those Blue Mystique dye jobs. We had no idea about orchids at that time and got conned on that purchase. I repotted the plant in February and it has been growing like crazy, putting out a ton of roots and three new big leaves. Much to my amazement and joy, what I thought was going to be another root has turned out to be a flower spike. The spike is now about 4 inches. My question: a what point do I need to stake the spike? Is my goal with staking to try and encourage the stalk to grow vertical? Or is to provide support and let it grow whichever way it wants?