Well considering May is probably going to be PM, and that she has already said she we won’t be scrapping the EU court of human rights we won’t be getting our "sovereignty" back anyway.
http://www.express.co.uk/news/uk/68...ain-out-European-Convention-Human-Rights-Tory
Rightly so as it is nothing to do with the EU and we haven't had a referendum on the ECHR so if she wanted to scrap it I would expect her to make it a manifesto pledge and seek a mandate at general election. Once again leave campaigners not understanding what they have voted for.

