lg vs985 Verizon

Hi to everyone, I have an LG VS985 with verizon. I'm tired of paying so much money so I'm planning on switching to Boost or Striaght talk. I had a question, as my phone is locked with Verizon, if I unlock it and then switch to another carrier will my phone get black listed? The termination fee is 0 and I have to make my next payment in 2 weeks.