I downloaded BigTinCan BuzzMe for free and ended up not liking it, i went into options, advanced, applications and deleted it but now when i go to my download folder its still there but it says Archived!
Although I have not used it yet, there is a new archiving function to the SD card when using Appworld. I believe the only way to delete the app is to do it from the storage card only. You should be able to do this by accessing your media app then explore.