Sorry, I missed this.
Yes, you should be able to create a table, copy and paste the Imgur image link (make sure it has .jpg or .png or another image format in the URL), click "insert image" to add it to the table cell, and paste your URL in the prompt.
I believe the Imgur frame only appears when you link to an Imgur image without first clicking "insert image." It defaults to media in that case, which leaves the frame in place.
I'm working with Lucid on the table now, but the image should resize by default. The forum is set up so no image runs off the page.