ctrl+alt+canc, the last thing on the screen should be something like activity managment (I'm not sure if is like this I have the computer in italian) then a page will open with all the programs, from there you look for the goose one and uninstall it
I think he means use task managment, make sure nothing from this app is running on your pc. then restart your pc. then scan your computer again for any remanants of this app. it is possible this game is malware and messed up your computer but if it is just a glitch then what i said should work