A cynical part of me wonders if...
AT&T may not have caused the gas line mess through trickery (moving the markers that tell the crew where to dig), sabotage (altering the plans that told the crew where to dig, or swapping the Do/Do Not markers), bribery (paying a digger to "accidently" hit the pipe), or some other form of BS tactic to make Google look bad. Lord knows AT&T has done all sorts of similar crap in the past, from causing competing crews to be unable to reach job sites by "accidently" blocking the roads needed to get there, paying to have poles "involved in traffic accidents" to topple them where those other crews needed to string cable, or rigging the pole pitons (those L brackets used by the climbers) to "accidently" fall out (uh huh, SURE it's entirely coincidental that your teams used that pole last week & had no issue, but two days later a different company's crew has a man sent to the hospital because the pitons fell out from over use?), or essentially tying the lines to the pole (instead of the hung down loop of spare cable hung from a convenient place near the pole, it was looped *around* the pole & thus prevented the other crews from doing any installs at all), or holding a pseudo-strike around the job site so the other crew's workers couldn't even get past the mob much less to the pole...
My uncle used to be a line man for a competitor to AT&T & was full of stories about all the crap AT&T would pull to thwart competition from getting to the poles at all. Heaven help the crew that DID manage to string cable, the next AT&T tech would invariably "Oopsie!" & render it a fuster cluck that required yet another visit to the pole... at which point it would start all over again. He said his favorite was when the AT&T guys left their ladder behind, *steel belted* by damaged pipe clamps to the bottom pitons. Not as in one end on the ground & the other against the pitons & thus climbable, but *suspended in air* about ten feet off the ground & in such a way that it took a team in a Cherry Picker lift to be hoisted up, cut loose the clamps, & take the ladder down in order to access the pole. My uncle laughed & got even though, the 'Picker crew *wrapped* the ladder around the pole like an over sized twist tie & left a Thank You note taped to the wrungs. They didn't waste the use of the 'Picker, they finished the job with it & strung the line, then left for the pub.
So I'm not too sure the "accident" with the Google digger crew was a real one, it smells like AT&T's up to it's old schennanigans again. =-/