Indexing Fails When Content Types are Excluded from Search Indexing

I have over 20 content types on my site, only two of which (story and page) should be indexed. I checked the all of the boxes to prevent the other types from being indexed, but found that my indexing never went past 2%. After some digging around, I found an error in the module's logic.

node_update_index looks for all nodes that are not yet in the search dataset and does the necessary operations on it to index it.

search_config_update_index removes entries in the search dataset that match selected content types.

This explains why when I was running search_cron over and over again, it was attempting to index the same 500 nodes, since the node_update_index would enter it into the dataset and search_config_update_index would remove it.

Are there any other methods for removing a node from the search_dataset but still mark it as "indexed"? Perhaps leaving it in the dataset but simply clearing the text associated with it?