Reset not completing

I finally got some time today to research and solve this issue. Prior to today, I had been manually working around the issue.

The Issue
When I click on the Reset button, it never completes. I added some code to log to the debug.log and I found that the third $wpdb->query DROP TABLE IF EXISTS call never returned. See Stack Overflow question for detailed documentation on this issue.

The Solution
After some research and experimentation, I found that dropping all three tables in one statement solved the issue so I replaced the wpmc_uninstall() function in core.php with the following:

function wpmc_uninstall () {
	global $wpdb;
	$table_name1 = $wpdb->prefix . "mclean_scan";
	$table_name2 = $wpdb->prefix . "mclean_refs";
	$table_name3 = $wpdb->prefix . "wpmcleaner";
	$SQL = "DROP TABLE IF EXISTS $table_name1, $table_name2, $table_name3;";
	$wpdb->query($SQL);
}