Swinging Everflowing Aspergillum in a circle or arc.

[Starcomet]

As a full round action you can swing the aspergillum and dispense the holy water as a ranged touch attack up to 10 feet. My question is does this only mean swinging in a single direction or can you swing in an arc or twirl around while doing so? I have seen real life aspergillum's used in this way.

[Nefreet]

Single target.

[Starcomet]

I figured it would be single target, thank you!