I've been thinking about this, what if when he said Jan 6 was a terrorist attack, he did it intentionally to have it on public record.
If he legally proves the feds were involved in the Jan 6 as they like to call it "insurrection," they can be classed as terrorists as well as whoever gave the command to breach the capitol barricade (Ray Epps).
Brian Cates wrote that Cruz was being opportunistic, but honest -- there was a terrorist attack, by the government on we the people. He claimed that this will be exposed soon, and Cruz wanted to look prophetic.