Nathan,

It looks like by "command-line" you mean the unsupported console or vSphere CLI, but if you have the VMware PowerCLI (PowerShell toolkit) installed you can change the "Management Network" port group to inherit all the NIC teaming values from the vSwitch in one line:

Get-VMHost  | Get-VirtualPortGroup | Where-Object {$_.Name -eq "Management Network"} | Get-NicTeamingPolicy | Set-NicTeamingPolicy -InheritLoadBalancingPolicy $true -InheritNetworkFailoverDetectionPolicy $true -InheritNotifySwitches $true -InheritFailback $true -InheritFailoverOrder $true

If you want to get all of your servers just drop the  portion of the line of course.  Note that this will set all NIC teaming values to inherit from the vSwitch settings, not just the "Load Balancing" value.  Changing just that value to inherit or forcing it to "Route based on IP hash" is trivial at this point.

- AC