Simon Linden admits his team got off the hook after edging past second division Jewdinese in extra-time.
Strikes from Mitch Green, Dean Shaw, Oli Henry and two from Ben Ellis saw the Division One high-flyers home.
Victorious boss Simon Linden told JC Sport: "It was a top effort from Jewdinese - they really didn't stop for the full 120. Good luck to them for the season.
"We didn't perform today and got off the hook - next week I will need a completely different Blizzard performance. Now it's just a case of avoiding a draw away in Leeds."
'Nese chairman Jake Erlich told JC Sport: "It was a frustrating game, especially as we were well in the contest at the beginning of extra-time. I just want to congratulate all my players on working their socks off for 120 minutes amd being able to fend off a team who are in the division above up until extra time.
"The problem is when you play against a team who think they are much better than they are, they start to get frustrated and take their anger out on our players which unfortunately was a new experience for some of our younger players. Some of the Blizzard players I feel need to have a reality check after the abuse some of my players received, but were not phased by this as we know being a young team were going to get kicked week in, week out but that's something we have to deal with. I think it's appropriate to mention that this isn't a general thing amongst the league or Blizzard Storm, but just a select few.
"Anyway we will be back and ready to start again next week with a massive game against rivals Norstar."