Since you don't have any regular access you could try one or two things. I'll let you decide which one first. Start the device in Safe Mode. If there is another app that is crashing your launcher this should allow you to get in there and clear out some caches, clean up junk files and stuff you don't need and see if the issue stops. If you can't get in even in Safe Mode or you don't think that's the issue. You could try wiping the partition. Boot into Bootloader mode and wipe the partition. This won't cause you to loose any data and will hopefully clear out or fix any corrupt data issues. Just a side note, you didn't mention it but because it happens, you should try to avoid allowing the device to turn off on its own from low battery. This is often like pulling the plug on the device and as most are familiar with what happens when you pull the plug on a pc, it's not good for the health of the device.