<VV> Oops - need advice

[Joe Hennerfeind]

It sheared the plug off flat against the head - so just the metal of the sparkplug is in the threads of the head with nothing to grip.  This engine, while running, had sat for a long time and a mouse had made its nest around this plug, so i suspect that getting the remainder out will be a challenge.
Can anyone comment on my 120-130 lb readings.  That good enough just to address this problem and not tear down more of the motor?