In the game directory 6 voice files can be found, they are called vo_temple_orbend1,2,3 and vo_orbhit1,2,3 HERE IS WHAT THEY SAY.
orbend1- YES, YES MANDUS, I KNEW YOU UNDERSTOOD. jUST A FEW SECONDS MORE AND THE EGG WILL HATCH.
orbend2- I AM CREATED, MY LAIR IS PEELED AND THE AIR BEGINS TO VIBRATE AROUND ME, SOON WE WILL BE A FLAME
orbend3- IT IS DONE, THANK YOU MANDUS......LET THERE BE LIGHT
orbhit1- PLEASE MANDUS NO, FOR YOUR CHILDREN
orbhit2- SMASH IT PAPPA, SMASH IT
orbhit3- DADDY, DADDY, PLEASE DON'T KILL ME
So, it apperas that there was or still is an alternate ending where mandus allows the machine to finish it's plan and apparently you had to smash something (presumably the orb pieces) to stop the engineer. So, what's your opinion, has nay enterprising soul discovered something more?