can a crossbar damage a joplin seatpost?

Now I've had not many problems transporting my full susses around on my saris bones bike carrier ever since I purchased a false crossbar but i'm wondering if a false crossbar could damange a variable height seatpost i recently fitted onto my ransom like the joplin . Given theres alot of play if that car goes over a speedbump and the amount of pressure the cross bar exerts holding over 33.0 lbs of bike , is this a risky idea and should i buy a whole new seatpost to use instead of the joplin to hand my biker under?
Specialized Camber
http://www.pinkbike.com/photo/10715065/
Fuji Sportif Disc 1.5
http://www.pinkbike.com/photo/11000596/
http://www.pinkbike.com/photo/10715065/
Fuji Sportif Disc 1.5
http://www.pinkbike.com/photo/11000596/
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I've bought a new bike....ouch - result
Can I buy a new bike?...No - no result
My advice be to send it back and get it fixed.