Dolorous Ett's Bestiary

Well, I've finally nerved myself to watch the last episode of Enterprise. Oh dear oh dear oh dear.

The premature axing of a TV series is never an occasion for self-congratulation, but was it really necessary to make the last episode ever so rubbish just to justify that decision? 
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Of course, the characters still exist in our heads. And in the Mirror Universe of my mind, the series is going from strength to strength. Highlights of Series 5-7 include:

Yes, seriously. Blue Nazi lizard people. In San Fransisco, no less.

Now before any of you defriend me for being a lunatic, I hasten to add that I am referring to the last episode of Series 3 of Enterprise. In which Archer gratuitously robs poor old Reed of his one chance at a bit of glory (as you can see, my love affair with Jonathan Archer continues apace) by blowing up the Alien Superweapon and saving earth. Only...

In the ensuing explosion something strange must have happened, because the Enterprise finds itself in orbit around an Earth that appears to have no idea that it has just been saved from being blown into little pieces by an alien laser beam. Archer is presumed to have been blown up in the explosion that destroyed the weapon. But no - back he comes, like the proverbial bad penny.

Archer wakes up in a hospital tent - to see three tall figures in uniform bending over him... one of which is a bright blue, pug-faced lizard man in full Nazi regalia...

Cue credits. What a cliffhanger.

In a couple of days I'll be able to find out how on Earth that happened... but in the interim time's been hanging a bit heavy and I've been amusing myself with trying to figure out how such a thing could possibly have come to pass - without much success. So - what plausible explanation can you think for the sudden appearance of the Blue Nazi Lizard Man? (If you can't think  of anything sensible I'll settle for silly...)