I'd say this is a standard problem with this shoe I'm afraid, but these look brand new. It might just be the way you're made up that exaggerates the bend at the metatarsals; just be thankful you haven't got the CS/GTX version. I doubt the tear affects shoe performance though.
For what it's worth I found the Speedcross 3's to be pretty slippy compared to other shoes.
Bloody hell Lake Runner that sounds like substantial mileage!
I've got a 40 in March, two 100's in July, and Snowdon marathon at the end of the year. That's my dance card full I reckon.
The two 100's was accidental, the second is the LL100 which I'm not treating as a race - rather a comprehensive weekend recce (if the wife and kids allow it) so that I'm familiar with the course for next year. Also supporting a pal on his 100 in May.