Dyson DC08 Animal (small hoover) motor making lous noise and burning smell?

Hello, I've just started having problems with my Dyson. it was working fine, all the filters on it were new. I had just finished cleaning out my little furries and hoovering up loose hay and bedding, then went on to continue hoovering the louse with no problem. I was cleaning the kitchen afterwards and this is when the hoover started to make a really bad noise and smell.

I have since opened up the Dyson and discovered there seems to be a problem with the motor. Could someone please tell me if there is a way to open up the motor housing? The motor looks like this: http://ukvacuumspares.cardpayment.net/Merchant2/merchant.mv?Screen=PROD&Store_Code=1&Product_Code=666701

I can see some inverted screws, by which I mean I see the tapered end but the actual head is inside the housing. So how else would I open it up?

Thank you for your consideration.