Samoa Joe has to be in the Summerslam main event at this point, and I'm fairly sure the company knows this.
I can see it being a four way with Strowman getting himself involved next week... either that or Strowman will cost Roman the match and it'll be a straight rematch.
I was convinced the original idea was Roman takes the title from Lesnar at SummerSlam and probably holds it until at least Wrestlemania, but this is starting to look a little more unlikely now. There's too much heat still there with the Joe/Lesnar angle and everyone wants more. The Roman/Strowman feud is also far from finished, when I and probably most people thought it'd end at GBoF. So, one of the scenarios you came up with is almost sure to happen. A Fatal Four-Way would make the most sense with SummerSlam still over five weeks away? I'm not sure how they could string along straight up re-matches for such a period of time without losing a bit of momentum. At least this way, they can cover another two weeks with something like:
- Braun interferes to either cost Roman the match against Joe, or more likely just ruins the match entirely and Kurt orders a Triple Threat the following week.
- Lesnar then interferes in the Triple Threat, resulting in no winner again. Simultaneously putting over all three guys as it's an odd situation of Lesnar not wanting to face any of them, but Heyman playing the whole 'they don't deserve it' card. Obvious solution is if no one can play nice, then all four of you are going to settle it.
Again though, I'm not sure if Vince is going to allow the 'dream' of Roman Reigns beating the guy who beat the streak originally, what with him being the one who finally buried the deadman at Wrestlemania as well. I always thought they'd stick with this. They've got themselves in a tight spot as anyone else taking the title from Lesnar diminishes Reigns a bit, as he doesn't get to beat him (as Lesnar will likely take time off once he doesn't have the belt IMO). Heyman could stick around and manage Joe or Braun, though.
If Reigns doesn't get the title next month, then they'll probably work on something for Survivor Series instead. He's winning it at one of the big four.