I see posts sandwiched in 2x4 framed walls all the time, even though they protrude a bit. Also, I could never imagine moving a supporting member without teporary support. And finally, there are footings beneath those posts, so they shouldn't be moved without a new footing to support them.
Others here know more about these matters, but these are just some of my observations. The other guys will be along in short time, I'm sure with a lot to say, but photos are always helpful. I hear they're worth 1000 words.