I wondered about Venom, Maximum Carnage, Clone saga! As your post points out, it was during Pete's and MJ's marriage - so they really have messed these stories up!
His time with Avengers is also Royally screwed! I can't with to see the next few issues of New Avengers to see where he stands on that team!
I am going to laugh myself stupid if they retcon his membership entirely!
If all this wasn't confusing enough, bringing back Harry is the icing on the cake! As G-man post points out, where's Liz etc!
JoeQs, stick around and find out isn't quite enough for me!