I am starting to wonder how reliable Nash is. Of course, how reliable of a source is any pro-wrestler as he has has said many differing things over the years.Nash cleared a lot of the Goldberg mess up in his latest shoot interview(which is definitely worth watching). He says he made the decision to end Goldberg's streak because he(Nash) was just as over at the time and it just made sense. The idea following was to have Goldberg get revenge and eventually turn Heel having his own group to fight against a face nWo. He didn't really go into details as to how that would have went down, but it was all for not because Goldberg decided to take time off to make Universal Soldier 2.
What you're referring to is later on down the road when Hart gave him a rematch and then Goldberg was screwed over and Hart reformed the nWo. Goldberg was supposed to feud with them throughout the year ending with him regaining the belt and having a dominant reign... But he screwed himself yet again by getting injured for real. According to Nash it was Goldberg that decided to try and punch through the limo window. Nash had suggested he use a piece of metal to bust the window, and Goldberg insisted that he could do it with his hands, which led to an injury and threw another wrench into the Goldberg vs. nWo storyline.
Goldberg did get hurt in 99. He was gone from Stampede up until his return during the Megadeth song in July. Now, I probably should look it up but I am too damn lazy, but I thought it was for a knee or shoulder etc. I can find very little where Goldberg was supposed to win the title back in 99. There were always plans I am sure, but nothing ever came to fruition.
You had the Sting heel turn, and then Bischoff had hoped that Hogan and Bret could feud before he got sent home. To the best of my knowledge there were no definitive plans for Goldberg. But Nash mentioning Goldberg turning heel? Seems like Nash is making shit up. I don't think the powers that be in 99 would have allowed that. Goldberg was a money making monster still. Now maybe plans were drawn up....and why would Goldberg turn heel to face the heel nWo? Oh, I see, you said a face nWo. But then how would the nWo turn face? And why? Nash is confusing....
As far as the window bashing incident. Nash had nothing to do with the angle, it was Russo. He had a pipe up his sleeve but it fell out, and he kept hitting the shit out of the window like a dumb-ass.