Yeah you got yourself in a bad position here...
I would try to install the correct package... Again
Then whether it installs correctly or not. I would then try to uninstall it using the correct command...
Let us know if that works or not. I might have a couple other hack suggestions at this point, but trying to install the wrong architecture is bad and we should probably warn you about that but at this point we need to get you fixed.
I suspect you have a package installed with the architecture wrong and trying to uninstall it with the different architecture isn't working but we need to give it a try.