Have you tried looping time in the mision?
Play around with the code below and you should be able to create the timeline you want....
ie. after sixty seconds the clock jumps back 15secs...streching the timeline. Â
#start
SkipTime -.005
~60
goto "start"
exit
(Pls note: im no expert in quatum mechanics and manipulating the fabric of space and time.)
Hope this helps