stuck in first gear, (not a metaphor) Options

[r3dplanet]

Okay.

I have a 1971 1.7L 914 that over the past several months I've upgraded to a side-shifter gearbox, flywheel, clutch, all-new linkage bushings, and most recently a Rennshifter. I thought I had it all worked out, but over the past couple of weeks I've noticed a little clutch cable irritation in that I keep having to adjust the cable a little further and a little further to keep it from grinding. I had a volunteer jump in the car and push in the clutch while I looked at the gearbox shift lever, and it moves as far as it can.

Yesterday I drove it around all day without any problem. Last night I parked the car on level ground and left it in first gear. Today I jumped into the car and I cannot get the car OUT of first gear. It's totally stuck. The gearbox shift lever is moving as far as it can, and when in first the clutch grabs normally and releases normally. Yet I'm still stuck in first.

WTF?

I'd really love some help on this one. I'm not even sure how to tow it out of here to a mechanic with it stuck in gear like this.

Thanks for any responses.

-m.