Ok People, PLEASE,PLEASE tell us even though it's embarrassing what and why this situation happened....
Ex: "Ok guys, I know this may sound stupid, but I was out in the road today as I was bored and was reading up on how some of you guys are making big power and decided to play Ronnie Sox for the day and hung my 4-speed in 1st gear"...
This makes diagnosing MUCH easier instead of guessing at about 500 different things, we can narrow it down to you fu*ked the linkage up either internally or externally...
Question: Did you have the car's rear wheels off the ground when you tried to shift out of 1st gear by hand?
If not, then you prolly wouldn't be able to move that shift lever on the trans with the weight of the car against 1st gear...
Also, you COULD pull the side cover if all else fails and take a peak inside the trans to see if any of the blocker rings are screwed (Brass ones)..Also, you can see the shift forks through the side cover hole as well...
Getting the cover back on however, may pose a real Challenge....