There was potential after than Bon Jovi tour - the reisssue of Jump was a hit, Balance went Top 10 and a few top 30 singles - plenty of touring success has been based on less than that but VH spluttered and Hagar didn’t capitalise on that success in the UK, could have easily been a regular in the Apollo type venues. I think he thought being at the Sabbath gig meant he was a bigger deal