I dont think it will hurt anything, but I would cut them with a porta-band. Way easier and much faster.
why does he want to cut your spring???
cut is usually done from the bottom.
http://www.svtperformance.com/forums/how-230/626015-complete-how-cut-your-stock-springs-thread.html
That will ride like shit.....but be sure you cut from the top.
That will ride like shit.....but be sure you cut from the top.