Clutch not disengaging, Help!!

ShehK

Hi guys!
Took the car for a trip to another city, drove around there and came back and everything was good. Got in the car again after maybe half an hour or so and then parked it in the driveway in reverse (it's at a bit of an incline). A few hours later I started the car and now it won't get into gear. It gets into gear when off but with slight difficulty. I also noticed that the clutch chatter doesn't seem to go away the way it used to when the clutch is pressed in.
I thought maybe it's the CSC but the symptoms seem slightly different, the clutch did not sink to the floor at any point and feels normal.

Anyone experienced anything like this or know what it might be? Crapping myself as I don't know a whole lot about this stuff and the 5yr power train warranty ended in march.

Probably worth noting here the car has an RJM clutch pedal assembly (got it a year ago and it's been working fine). I wonder if I should tinker with it.

Thanks for the help guys!