Clutch problems from Atco raceway....HELP!..

[RPM427]

Yesterday I went to the NMRA event at Atco raceway with a few friends. My car made the 2 hour drive fine and we all had fun. The problem happened on the return trip. There was 5 hrs of bumper to bumper traffic from the NJ turnpike, across staten Island, and onto the So State Parkway. I have never seen so much non stop traffic before in my life. Aparently my clutch didn't like the slower-then-first-gear-crawl speed for 5 hrs. I had to drive the last 5 miles or so to my house in first gear without stopping becuase the clutch will not disengage at all now. I could smell the clutch during the traffic and I knew it was wearing fast due to the constant stop and go (mostly stop).

Why does the clutch not disengage if it is worn?

Wouldn't it just slip and not transfer power if it was burned out? Someone please explain this to me.

Does it sound like I need to replace it, or is it a cable or throwout bearing problem?

I'm also going to replace the rear main seal while I'm in there. How is it installed? I have heard the term "drill out procedure" before. Is it riveted on or something?

And.. does the flywheel NEED to get resurfaced everytime the clutch is replaced? If I don't have an impact gun, any suggestions on removing it without spinning it? Do i need to support the engine in anyway while the tranny is out? Thank you. I need to fix this quick becuase I have no working car now. I am going to order a Dual Friction, throwout bearing, and maybe a flywheel depending on the responses from this post. Anything else? THANK YOU!