Misjump
From Elite Wiki
The way to force mis-jump for a mac OSX may follow thus:
1. Pick target system 2. Exit station 3. Get far enough away to jump 4. Initiate hyper-space countdown
4a Start holding down right and down arrow keys 4b Reduce speed to zero
5. Finish countdown 6. Blast those bugs! If this does not work, you may either need to update Oolite or simply play normally.