Hi,
you seem to experience several problems at once.
First off, deleting the VST plugins folder shouldn't affect Logic, since Logic loads AU plugins which are located in the '{Mac HD}/Library/Audio/Plug-Ins/Components' folder.
Deleting the '{Mac HD}/Library/Audio/Plug-Ins/VST' folder would affect the EZdrummer 2 Standalone, though, since it loads the VST for correct operation.
If there is no 'VST' folder in your '{Mac HD}/Library/Audio/Plug-Ins/' folder, please create one first, then run the 2.1.1 update.
If you have no 'Components' folder in there, I recommend creating one as well.
If this fails, what happens if you run the Full EZdrummer 2 installer first and then the 2.1.1 update, does the Standalone load as expected?