Sooo Russell's weight is even worse than it was when he was on Oakland and after 6 weeks of actually training like a professional athlete should year round and losing 12 of the probably 60 pounds he needs to lose, he felt the need to announce he's going to make a serious comeback? That'll probably scare NFL teams more than it'll spark interest since it shows he's seeking instant gratification just as much as he was before.
If he waited to make this announcement after months of training and getting below 260 where his weight should be, then I'd say several NFL teams would be stupid to not give him a workout. Making this announcement when he wasn't even below 300 is as stupid as it gets.