Is there any way that you can do this? I have 400+ items I need to remove...
as far as I'm aware there is no way to do this.
However, if you are comfortable doing so, using an add-on like snap links plus for firefox, or linkclump for chrome, will allow you to remove TC items much more easily.
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Site-functionality-wise? Not as far as I know. I usually just ctrl + click the 'x' to bring the reopened/refreshed page(s) up in a new tab, do a row or two, close out the new tabs, then refresh the original page to double check where I'm at and start the process over when I have to clear out a large treasure.