I have one of these too, and I love the way it brings you to a peak that you can't hold back from. Seems like that little spurt was you trying to hold back, but then you just started blowin' the rest of the load.
That certainly looked extremely intense, however I do not see that working for me, I was circumcised as a baby and my dicks head is not sensitive at all, I normally have to masturbate for approximately one hour rubbing my glans furiosly before I cum!