I don't think it's because management wants to avoid counter-programming Elira's return zatsu. I just checked Holodex, and several EN talents have streams scheduled for later today.
It's very unlikely to be a suspension either, since as
>>73510704 correctly pointed out, she's not involved in any of the current drama. Plus she responded to Kiara's flirting, which is something that management would not let her do if she was going on a totally voluntary "vacation" that is completely voluntary.
And she is a bit of a gym rat; and the tweet, and her response to Kiara's response, are both written in her "handwriting." I think it's safe to take her tweet at face value.