So I've learned a few things (which is dangerous). I think I figured out a work around, but please someone tell me if this was a dumb thing to do.
I still can't figure out if its possible to write to the alarm and tamper parameters on the door sensor node, but I discovered while the nodes send alarm value with every event, the tamper value is only transmitted when the tamper switch is triggered. so what i did was in the homegenie module list, i edited the sensor.trigger value for the node from 255 to 0.
Then I edited the javascript of the doorwindow widget, and i commented out line 37-39.
else if (alarm != null) {
tamper = alarm.Value.replace(',', '.') * 1;
}
This seemed to resolve my delemma, I dont always see a red tampered alert on the widget anymore unless I trigger the tamper switch. But being a novice, im not sure what if any negative implications making that change did.