Thompson is unsure how much part Rumun
Ndur will play in his team's trophy bid after he picked up an injury that ruled him out of the 6-2 thrashing of Belfast Giant seven days ago that took Blaze to the top of the bmibaby Elite League.
There were moments of violence with Dion Darling taking on Coventry's Rumun
Ndur in hand-to-hand combat, while Ndur later fought Brad Voth.
Former Blaze enforcer Rumun
Ndur pounces on Danny Stewart.
Nathan Remple restored Devils' two-goal cushion and Rumun
Ndur set up a tense finish but Cardiff hung on.
Coventry tough guy Rumun
Ndur was thrown out for misconduct as Coventry's night went horribly off-track.
Blaze face a testing weekend - visiting the hotbed of Hull tomorrow, where the home team will be looking for a first win of the season - followed by the visit of Nottingham Panthers on Sunday, including the return of Rumun
Ndur to the Skydome.
Following an early season injury to Rumun
Ndur last year, and various other blows, Blaze spent most of the last campaign with four players on the blue line.
ICE HOCKEY: Cassidy Coventry Blaze head coach Paul Thompson has confirmed he will not be renewing Rumun
Ndur's contract for next season.
Ndur was lost in the opening weeks to a neck injury, while Sylvain Cloutier, Curtis Huppe and Jonathan Weaver all had spells on the sidelines and Michael Tasker retired.
Thompson has been full of praise for the role Martin has played this season in the absence of key players through injury including Rumun
Ndur and Jonathan Weaver.
Blaze have been hit by injuries from the opening weeks of the season when Rumun
Ndur was ruled out for the campaign with a neck injury and Sylvain Cloutier, Curtis Huppe and Jonathan Weaver have also had spells on the sidelines.
Blaze have also been without skipper Sylvain Cloutier and Curtis Huppe for spells this season, while Rumun
Ndur was ruled out in the opening weeks with a neck injury.