This has to be an extremely encouraging sign. You can see the MJO has fizzled out within the crappy phases but the support for not only the MJO signal to re-emerge, but become pretty strong in phase 1 is very good. Obviously there is skepticism with how models handle MJO wave progression, however, you can see that we've been very slowly crawling towards more favorable times. The demise of the MJO and slower eastward progression is probably why we've been seeing the models "push back" the pattern.
Actually, if you look at some of the ensembles posted here the past few days, they have striking similarities for what we'd expect in MJO phase 1. I wouldn't worry too much about what OP runs are showing in the extended range. With an MJO of this magnitude there is going to be a ton of interference and feedback on the guidance and I think you can see this well on today's GFS run with some wild H5 evolutions.