I know vB allows it but there are too many column fields so it's still forcing it to expand. On my forum I only have 5 data columns.
You can just remove the more unimportant ones or leave them if you like if you think they are necessary.
If you wanna remove them:
Admin CP > vBulletin Options > vBulletin Options > User Listing Options
Check and de-check what you like.