With TSA - you can generally ask for a scan at check in, at the bigger airports. You can go over, talk to them. open for them, repack and send the bike on its way. They may open again, but you are at least reducing chances.
On the telling mis-truths to counter clerks. Besides being what it is, I don't see any advantage. The airline baggage sections I've seen offer an advantage being a bike. Two examples.
United:
If it is a bike and oversized (62") - $150 domestic, if it is not a bike $200
If it is overweight and oversized and a bike the same $150, if it is oversized and overweight and not a bike $400
http://United https://www.united.com...olOthrCarriers
Air Canada:
If it is a bike up to 115in, 70# - $50
If it is not a bike and overweight and oversized - $100