The thing about glove mode is it is not really activated when it is enabled. You have to unlock your screen with gloves or something. When it is activated you see white circles showing you where you touch on screen. Sometimes it is activated even though you unlock it bare handed. If that happens you can deactivate it simply by locking and unlocking with bare hands again. At least that is how it is for me. I had a lot of touch problems without glove mode, now I never disable it. And touch response is much better. Those crazy ghost touches only happened one time while I was messaging my friends while plugged in to a laptop.
When screen does not respond, holding the phone in hand helps somehow.
For alarm, you can set it to stop when you press the side buttons.
I don't think hard reset or repair would fix it, but you never know and it wouldn't hurt to try. If nothing helps you should send it for repair.
