The Cavaliers are dragging the NBA Finals back to Cleveland, kicking and screaming. I checked the traveling itinerary and they’re taking the high road, AKA Route 23, the LeBron Highway.

A collapse of historic proportions is still within the grasp of either team. The Warriors hold a 3-2 series lead, and if they manage to win the series they inherit the crown of greatest team in sports history, name your sport.

But if the Cavaliers dig and scrape and win the last two games, they have pulled off the greatest comeback in Finals history, the only team ever to win after being down 3-1 (31 previous teams failed in that quest). And LeBron James’ stock rises on the Dow Jones of all-time hoopsters.

But what’s mainly at stake is an NBA championship, and the rest will get sorted out by us experts, deep analysts and assorted geniuses.

The Warriors’ championship that seemed all but inevitable just a couple days ago now seems, uh, not inevitable. In the Finals, everlasting greatness comes and goes in the blink of an eye, and Monday the Warriors blinked.

Between them, the Warriors and Cavaliers have managed to turn a dreary and stale Finals into something lively and amusing, potentially epic. And nobody wants to be on the wrong side of epic.

This has become a series that is hard to figure. James said Game 4 in Cleveland was a “must win” for his guys, and they lost, but here they are, still alive, thus destroying the hard-won credibility LeBron built up with Warriors’ fans.

Steve Kerr said after Monday’s 112-97 Cavs’ win that he likes his team’s position, identical (numerically) to last year, when the Warriors went back to Cleveland and won Game 6 and the championship.

But what’s Kerr going to say? “Holy crud!”?

Kerr will feel better if he and his assistants, after watching video and putting their heads together, discover where the Warriors’ defense went. It was MIA on Monday, which is kind of to be expected, considering that the team’s best defensive player, Draymond Green, sat this game out, taking in an A’s ballgame next door while his teammates struggled.

“Well, (Green is) their best defender,” Cavs head coach Tyronn Lue said, ticking off Green’s specific defensive wonders, “so that definitely helped hurt their defense.”

So did the short playing time of Andrew Bogut, the key to the Warriors’ interior defense that was as absent Monday as Green. The Cavs’ hard-driving crew, mostly Kyrie Irving and James, had their way inside the paint, as the three other guys who played center for the Warriors didn’t exactly intimidate or otherwise impress the Cavs.

As for Green: The media — TV and other stalkers — were preparing to cover Green’s triumphant march from the Coliseum to Oracle after the basketball game, when he would be allowed back inside Oracle to celebrate a second NBA title with his teammates.

It would have been a grand and raucous spectacle, but a funny thing happened on the way to Oracle.

The loss put a heavy load on Green, a dose of guilt for this Warriors’ loss and a deepened call to duty for Game 6. The only way Green escapes everlasting ignominy for being suspended for this game is if the Warriors win the series, in which case all is forgiven.

All the experts spent a couple days breaking down Green’s suspension, many of them, including former players (i.e. Charles Barkley), pointing out that Green was justified in his felonious flail at James, who violated the ancient street no-stepover rule.

So if you’re keeping score at home, Green gets huge points for street cred, and all it cost him was a chance to help his team wrap up a championship at home.

Meanwhile, James, or Dr. Stepover, has to be winking at his teammates as they head back home.

It has also been a field day for conspiracy geeks, the small cult of several hundred million fans who are solidly convinced that the Association, in league with Big TV, will stop at nothing to make sure the Finals goes six games.

Done. Now that the money monster has been fed, the boys in power can sit back and let the games be decided by the players, which will be kind of fun.

It will also be a major challenge to the Warriors. Even with Green back, Kerr has to find a way to regroup his team, clear their heads of the haze that set in in the second half Monday night, when they got smoked. Many experts laughed when the Cavaliers said their plan in this series was to run with the swift Warriors, but in the third quarter Monday the Cavs scored 14 fast-break points, to zero for the local swifties.

On to Cleveland, where epic awaits.

Scott Ostler is a San Francisco Chronicle columnist. Email: sostler@sfchronicle.com Twitter: scottostler