Yes, it is possible. But kinda complicated.
Alright, here are some instructions.
1. Make a backup copy of the patch in case you mess up.
2. Delete the samples that you won't be using. Enter the group editor, and select all the groups other than the single instrument sustain samples. Delete the shorts and release samples (marked with -r). In many cases it is important not to delete the groups, but to delete the samples in the mapping editor. This should bring the overall size of the instrument down a lot.
3. For cinelite, make sure the shorts are disabled in the mapping page.
4. Next, you may need to remove some scripts. For cinelite, delete the performance shorts script.
5. Put in the sips scripts. In the 4th slot, put the sips starter, and in the 5th slot put sips.
6. You're done. Almost.
7. Because of the lack of release tails, the ending of notes will sound a little weird. You will need to put some additional reverb on the instrument to make up for this. For cinelite, a little less than halfway on the knob sounds good.
Essentially, release tails are the main culprit, as well as if any of the developer's scripts try to change tunings.
Here is a quick example:
https://clyp.it/bwzux1d0