He has shown a hell of a lot more desire and will to mix it up on special teams and that's how you keep a spot as a 5th or 6th receiver on a roster. If we kept Wallace he'd be inactive for the whole season until next training camp when everyone will be talking about his potential again, and how it's really time for him to put it all together.
You can have the skills and talent, but coaching you to use them consistantly can only take you so far... at one point you have to say, the kids been taught over and over again so he has to take the next step and use that knowledge to help him perform at a high standard... Apperantly Wallace is still performing as a rookie after a few years coaching, and not just under Sporano, but also the new regime has given up on him...