I did not even read their motion to dismiss and I knew what would claim.
Qualified Immunity (most, the vast majority, of Cops and TSA personnel, will state unequivocally that the Constitution does not apply at a airport; why they think this I do not know.)
And
You interfered with the screening process by talking back. (which is such a vague and arbitrary standard that it should be deemed unconstitutional.)
The only First Amendment (free speech) at an Airport comes from Hare Krishnas suing about collecting donations at an airport. The Supreme stated in essence that people don't want to bothered, business would be affected, etc. However, that case should not be read as an blanket tossing out of the Constitution or the First Amendment.
Good luck, Phil, through in some "Houston v. Hill" into your defense, Houston v. Hill stands for the right to talk back to police.