The digitizer is glued to the LCD and is hard to remove without professional tools.

If you had the tools and experience, you might be able to remove the LCD with the use of a screen separation machine.

Safety first: Protective glasses and heat resistant gloves!

Performing this procedure, you shouldn't need to protect the LCD from heat, as we will only be heating the device enough to loosen the adhesive.

Obviously if the screen is cracked, I would suggest taping it together before proceeding.

Using a heat gun or screen separation machine set the temp to 60c, start at the top left corner of the screen. Don't heat for longer than a minute and you only want to loosen a inch or so at a time. Slow and steady, wins the race! Apply heat and use a thin pry tool on the corner of the digitizer. Go in about 3mm and loosen any adhesive holding the screen in place. Continue this process all around the screen to fully separate the screen from the frame.

Hope this helps :)