Hi winny, glad you're over your cold.
Given that you've paid so much for the two courses, is there any way you could continue with them both, just knowing that having missed a few of the TMAs you'll get a lower mark overall than you'd hoped for? There is still time to knock out a couple of poems - only 40 lines required!
Maybe you could just do a damage limitation exercise for this year's courses, and then just do one course next year so you can really focus on it? I mean in terms of your overall degree it probably doesn't make much difference if you score 1 or 2 courses lower than you wanted, right?
Let's look at how much time you have - am I right in remembering that you work out of the home during the day? What are your childcare arrangements etc.
In my experience the OU don't want you to drop out of a course and if you contact the regional office (is there an overseas one?) you might be able to get a further extension if you can let them know that you're having problems of a serious nature with procrastination (although you might not want to mention that!)/stress/other illness. You could just say something like, you're in a horrible situation and have been ill and need a further extension otherwise you might have to drop off the course. I'm sure they would help.
I think, if you'll permit me to say this, but it's your perfectionism that gets in the way isn't it? I know you've been ill just now, but generally it seems you won't submit something if it's not up to your usual standard, or you don't want to cobble together any old crap and submit it just to make the deadline?
But the thing to remember is it really doesn't matter, no one is judging you but yourself. Also, the majority of students don't achieve the higher marks. The tutor won't think less of you if you submit something not polished. Sometimes it's better to just submit something while accepting it ain't great. I'm a terrible perfectionist, it held me back for years, YEARS I tell you. I'm getting better - this time I submitted for the AA316 even though I thought my essay was shit. I thought I would feel bad, but I actually felt relieved because I'd made the deadline. Something to think about, anyway.
Have you already decided to drop the A215 for definite?
Gosh this is getting long now - is there anything I can do to help?