Agh. I hated this so much, with the power of a million exploding suns. This happened during a period I was staying away from comics due to financial impecuniousness, so I didn't get to read it until a few years after the fact. And it makes no freaking sense.
For one, what event, exactly, was Prime's punch supposed to alter? What chain of alternate events winds up with Jason being buried alive? Death-like coma, really? That's what they're going with?
Next, what kind of half-assed security system is calibrated only to trigger when people break in and not out? Why even calibrate it specifically that way to begin with? A sensor is a sensor - easiest and default setting should be, break the seal, alarms go off immediately.
And how does Jason manage to claw his way out of a hard top coffin when he's apparently suffering from injuries severe enough to send him into a coma to begin with?