Is there a way to force quit dowloading an app?

Last night before going to bed I chose to update the Tomtom app from the App store. Apparently it's a substantial update because it still wasn't finished downloading this morning (In fact, there were prompts on my phone when I woke up asking me to resubmit my iTunes password, but one thing at a time).

In any event, I left for work with the app still downloading, and now that I've left wifi, I got another popup telling me that I must be connected to a wifi network or download on my computer. That's all fine and good, however now the app is stuck "Loading" and I can't stop it. I can't delete it or anything else, it's just stuck and sucking my battery dry.



Is there any way to stop it?