Clutch problems

I know this in an RX7 specific forum, but the registration for mx6.com isn't working and the webmaster address is invalid, so I thought I'd ask my question here.

I just bought a 1994 MX6, 6cyl. 5spd manual. Driving it home it was great, shifted smoothly, handled well, breaks are great, etc. etc. etc. Last night, halfway home from the store (about 2 hours after I bought it), it started refusing to shift into 2nd, 4th, or Reverse. I can drive it going from 1st, to 3rd, then 5th, but not being able to backup presents an interresting issue when trying to leave the parking deck at work... :banghead:

There is no grinding noise when I try to shift to 2/4/R, it just refuses to go in. I checked all the fluid levels and the only thing that was low was the engine oil, by half a quart. I took it back to the dealer I bought it from this afternoon and they are more than happy to investigate/fix the problem...on Monday. Apperantly they have no weekend mechanic. :swear:

Has anyone had this problem (or something similar) before with their clutch, and if so, what do you suggest I try to do besides wait until Monday. I work on the weekends and I'd rather not break it even more by only using half the gears to drive 40 miles to work.

Thanks