Phone connection problem

Yes, it looks like the thunderstorm has damaged your DTV unit because the DTV unit should only go off hook as a means of dialing the DTV Company. I would have that unit replaced. BTW, do not try to repair that DTV unit. I work for a Telephone company in the Maryland DC area and I can tell you there are no serviceable parts inside and the unit is not your to do that anyway. So call the DTV Company and have then replace the defective unit.