Work Around for Scripted Optimization

I was curious as to whether or not there was any new feature in 8 that allowed the user to optimize the doc with javascript?
 
If not, is there any solution for the following dillema:
 
I have a form that has a template that is spawned or deleted based on user input. Of course, however this causes bloating. Now, this wouldn't be a problem except the people using this form are using it over and over and over again for new people. So the file can get ridiculously big - what can I do about this if I can't optimize?
 
Thanks.