Detaching Digitizer on a Device Switched on

Greetings,

I have an iPad mini with a faulty logic board that I'm going to replace - it looks like the digitizer connector and / or near resistors / capacitors are damaged.

The problem is I'd like backing up the device before replacing the board and I have to type unlock code in.

Fortunately I can type the unlock code, but after that the screen goes mad - starts sporadically moving, being "touched" everywhere etc (Im aware of how to overcome "mad digitizer" problem and I think its not the case since Home button also doesnt work).

So, Id like doing the following:

1. Start iTunes and plug the device in
2. Type unlock code
3. Detach the digitizer so that it doesnt interfere
4. Do backup

The question is if detaching digitizer from a working device safe? I know I mustn't do this with the LCD since it kills the fuse, but what about the digitizer?

Thank you!