Letting Slott have his way is on Alonso. I think Slott made those statements about him being on ASM for the foreseeable future is because as long as his whipped boss, Alonso, was still around, Slott would be able to do whatever he wanted. Once Alonso was fired, things obviously changed. Slott hasn't had any message board rantings or fan beatings in a while, his Twitter account was deleted and Slott has been removed from ASM as of #801. And the awkward MJ part in 797 is most likely due to editorial mandating she return when 1) Slott doesn't want to use her and 2) didn't have any intention of bringing her back so soon or possibly at all. And with time constraints involved along with Slott writing his usual fluff, there's really no way it's gonna be good. Look at how Felicia was handled. She'd been turned into this maniacal villain and instead of getting a proper turn-around from that we get an "oops, sorry" in like one panel and then that's it.
Alonso being gone and Slott having his power removed are two key elements in allowing the possible reuniting of Peter and MJ. As long as those idiots were in charge, it most likely was not ever going to happen. And I don't believe Slott for a second that no one at Marvel wanted them together as there's evidence to the contrary outside of Slott already being proven as a liar.
I get that you are not fond of MJ. It's difficult to like someone when they're written as a complete b**ch, and/or just a rotten person. So, I can at least understand where you are coming from...but for me, I believe it's entirely possible to heal all that crap and take steps to remedy their relationship.