Suggested way to disable an embeddable

We just had a strange issue with a client who's servers are tightly locked down

A custom idea list showing the description was very slow, but after rebasing our local stage with the same data it was fast 

Whenever the production page was rendered it was taking 10 seconds or more to respond, after using the trace feature we could see an embeddable was taking all time, a user had added a twitter embeddable to the bottom of the post and removing this the page load was immediate again

The server does not have access to twitter so the GET request in the embeddable was eventually timing out/failing

To further complicate the debugging the embeddable output was not actually being displayed as the description is truncated prior to the link so the page request is trying to access twitter for something which is this case isn't displayed so maybe this needs some thought (thank goodness for the trace) 

Anyway, what I wanted to ask is what is the suggested way to disable an embeddable as the only way I could see to achieve this was to customise it to remove the GET request