@onehundred80:
-- No, the pedal does not move at all
-- No, there were no early indications of a problem prior to this occurring
-- Yes, I did check the clutch pedal and clutch master cylinder within the interior. All appears mechanically sound. Meaning, no leaks from the cylinder were visible, nothing appears loose, broken, or disconnected.
-- Not sure what you mean about the cylinder being free to operate, since it is directly connected to the clutch pedal, so it is not necessarily free? There is nothing interfering between it and the clutch pedal, if that's what you mean. By design, I would find that impossible to occur, as the master cylinder is high and flush on the firewall on the inside.
-- Yes, I have looked into and considered this before concluding it is likely a clutch pressure plate and disc related issue.

@amx1397
-- I have to other cars that are manual (as well as a few motorcycles). It is common to be able to put any of these cars (and motorcycles) in gear, without pressing the clutch pedal (or clutch lever), while it is turned off, so this behavior is not surprising.
-- Unfortunately, it is impossible to shift once the car is on, regardless of RPM.

As I have some experience with manual transmissions, both driving and repairing, I was just hoping to find other Crossfire owner's who already experienced the same behavior my Crossfire is exibitting and how they resolved the issue? This would giving me reassurance with my Crossfire, as this is the first particular occurance with this car, so I just wanted to be positive I am going down the right path?