I own one of those,
1-No, I don't think you can remove it, since it's attached to the body. Not to mention you'll void the warranty.
2-No, it's not possible to remove the base stick , however you can remove the bottom base.
3-Well, I do recommend you use the
XFX FXTRISTAND Triple Display Monitor Stand However the PX2370 doesn't have any mounting holes.
So your best bet is to leave the monitors as is and setup a display setup like this: