I broke my 1st string tonight while tuning. It's my E string (Helicore Pizz). It came unraveled in the peg box. My question is: would it be OK to leave the string off until I can get a new one shipped (probably wouldn't arrive until middle of next week)? I wasn't sure if the tension from a string is required to keep things in check (neck), or not. I have a spare E string (golden slap) but I really don't want to go through the process of putting it on for a few days if it is not necessary. Thanks!