There's very little gear oil in the shifter housing, and the main body of the gear box isn't connected fluid-wise to the shifer housing. The gear oil in the housing is just to lubricate the shifter itself.
That said, I doubt you've caused any problems or damage, and I even doubt you lost any gear oil out of the shifter housing. Check everything, clean up if need be, bolt it all back up and you're good to go.
| Dale Clark - RX-7 Bad-Ass
| '94 RX-7 R2 Brillant Black - Building the Perfect FD
| Go faster with stripes!