Ah Van has already signed for Super League new boys Widnes next season
Bradford ran in eight tries - and Bulls winger Patrick Ah Van clocked up 20 points - as Championship-bound Crusaders were crushed at Odsal.
The Bulls ended a three-match losing streak, which they had seen Mick Potter's men ship 158 points to Warrington, Hull KR and Wigan.
But, in their penultimate Super League match, Crusaders were given a pounding.
Ah Van got the plaudits for enjoying a 100% record with the boot - but Ben Jeffries had a hand in several tries.
Olivier Elima and Brett Kearney both touched down twice, while there were further scores for Craig Kopczak, Shaun Ainscough, Ah Van and Andy Lynch.
Bulls coach Mick Potter also reserved praise for teenage hooker Adam O'Brien, who returned to the field after suffering a broken nose.
Crusaders had twice pegged back the Bulls before the break with tries from Lloyd White and Stuart Reardon.
And there were second-half scores from Peter Lupton, Reardon again and Tony Martin, Clinton Schifcofske kicking just two goals from five attempts.
Crusaders, who head for Wigan next Friday evening, will now have to hope that Bradford win again the same night at Wakefield.
If the Bulls lose to their neighbours, and Iestyn Harris' men lose as expected at Wigan, then Crusaders, who made the play-offs under Brian Noble just a year ago, would finish bottom.
The Welsh club's decision to withdraw from next season's Super League has meant that several players have been snapped up by other clubs.
As a result, they have now suffered one-sided beatings in their last two outings, with that daunting trip to Super League champions Wigan still to come next Friday night.
POST-MATCH REACTION
Bradford coach Mick Potter:
"It wasn't pretty at times. And we would obviously like to concede less points. The positive thing for us is that we actually scored some good tries, which was good for the fans.
"Adam O'Brien tried his hardest under tough circumstances. He got a badly broken nose and it wouldn't stop bleeding.
"We took him off in the second-half but he was determined to go back on. At that stage we didn't need him to play but he was just so keen to get back on and we encourage that sort of attitude. Given that he can still play in our under-18s, it's fantastic for the future of the club."
Crusaders coach Iestyn Harris:
"It's very, very difficult but we've got to focus. We've got six days left together as a group and, after next Friday, they'll break up and everyone will go their separate ways.
"It's just about getting through this next week and we've got an easy game on Friday against Wigan away!
"There's some experienced players in there and experience is important at this stage when you're six days away from something no one's ever been through before.
"The older members of the squad have taken the lead and it's just about getting on the field and being as competitive as we possibly can."
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