Very possible, even probable. However, the people in the NSA have also no-doubt seen the odd disappearances and "accidents" that surround obama and Clinton. We're only talking about a few GB of data. Something that would easily fit on a thumb drive or two. Data that no-one wants to officially admit exists is easy to officially ignore and/or copy when everyone wants you to erase the logs and any trace of it. If the NSA personnel have any common sense, there are multiple copies of that tucked away in odd places, and some very direct sealed letters waiting in their lawyers files marked "just in case."
-—some very direct sealed letters waiting in their lawyers files marked “just in case——
yep...... and in the present tense “delivered”. To Wiki leaks.