Formerly overleveraged oil and gas companies that now boast clean post-bankruptcy balance sheets may slow commodity price rebound. The thing about zombies in popular culture is that they’re never completely satisfied. With an infinite appetite and a graceless gait, they plunder the population with no regard civility. Some folks say it’s the same for those small to mid-sized exploration and production (E&P) companies that have succumbed to death (bankruptcy) only to pop up later with more strength (a scrubbed balance sheet) and relentless hunger (crude production) regardless of the impact on others (sending oil prices into freefall). It’s that hunger that’s become a problem for everyone else. These so-called “zombie” E&Ps have used the bankruptcy code to the return to the market more solid. They’ve restructured their finances and cast aside cumbersome debt, all the while producing oil that other producers – including OPEC – didn’t see that coming. […]