Turning off Contacts on the iPad only deletes them from the iPad.
I guess I wasn't clear. I meant for you to turn off Contacts on the iPad, and the laptop (and any other device that syncs to the icloud account), then delete the extras via a web browser. In this case, at icloud.com.
Once you are sure everything is correct at icloud.com, then turn the contacts back on for the devices and laptop.
The idea is to get down to a single source, clean up that source, then reload to all the synced devices. You could do the same cleaning up the laptop, but it's a bit of a pain to completely erase the iCloud contact database.
Keep in mind it is very important to go to icloud.com first and make sure that database is complete before erasing your contacts from everywhere else.