[help] glass cracked, won't turn off! topic

So my nexus 4's glass screen shattered today :( and also the digitiser broke. The lcd still works and the rest of the phone seems to be fine.

Anyway, for some reason the phone is automatically restarting after I hold the power button for 10 secs to force power off. Also the phone boots fine into lollipop and with what little part of the digitiser that works I can access the notification bar and go into settings meaning its operating ok as far as I know.

I have no clue how to diagnose what's causing this, please help!!!

Thanks in advance