Is this a hacklemesh spider?

To be honest, this looks like neither. It is a male, and without being able to make out the eye pattern, can only speculate this is an orb weaver.
As with many spiders, it takes a close examination to get some spiders to species.
Your little friend seems to have lost a couple legs, that may give it an appearance of a different spider.
Just a hunch mind you, but take a look at male orb weaver.
http://www.spiderzrule.com/spider507/199.jpg

Well, it's not any 'hacklemesh' spider I'm familiar with. I'm not sure what it is, to be honest - that nice banding on the very un-orbweaver-like carapace suggest Running Crab Spider to me, but it's not one I recognize. Why don't you submit the photo to Bug Guide and see what they make of it? They have some first-rate spider people.
http://bugguide.net/node/view/6/bgimage