Floating Floor Installation Problem
Before you rip up the offending piece, try this one trick.
Get a block of scrap wood, like a piece of 1X4 or 2X4 -- a piece that is maybe 8 or 9 inches long.
Also get a roll of the best double-face tape you can find. The best stuff is a cloth tape, and is VERY tacky.
Put a layer of double face tape on the block of wood, then press the block down on to the offending piece of flooring.
Now try beating the dickens out of that block to get the flooring to move where it needs to move.
If it works, you're in like Flint. If not, you're only out a few dollars, and have not damaged anything (yet).