That's very odd because I played loads of times without updating, it always asks whether you want to update or not. Not only that, neither of those games got an update recently and if there's no internet, there's no way Wii U can check if it needs updates.
Definitely doesn't sound like a normal situation. Deleting the update data (not the saves!) might be the best idea.
Definitely doesn't sound like a normal situation. Deleting the update data (not the saves!) might be the best idea.