Poore, who has already served two bans in his first season in Super League, was put on report by referee Tim Roby for a 64th-minute "spear" tackle on Hull full-back Shannon McDonnell. Gentle expects the Australian forward to be charged by the Rugby Football League's match-review panel and later suspended.
"It's lucky that Shannon is not in the spinal unit," he said. "I thought it was disgusting. I am sure someone else will get the benefit of that."
Gentle could hardly conceal his disappointment at a third straight defeat which effectively ends his side's bid for a top-four finish. Hull's 20-year-old centre sensation Ben Crooks scored a hat-trick of tries for the second successive match but it was once more not enough to save his side from a surprise defeat.
The Black and Whites thought they had snatched a point when centre Kirk Yeaman's 73rd-minute try tied the scores for a fourth time but Wakefield centre Lee Smith won it with a drop goal in a dramatic finish.
"I believe the effort is there but the execution is just nowhere near good enough," Gentle said. "I'll give them a bit of slack because Jake (scrum-half Jacob Miller) has only just come in but our execution was disgraceful and we're compounding the problem with penalties.
"It's extremely disappointing at the moment. I think we've lost a bit of confidence. I brought the senior players back but I expected more and I don't think we got it. We're all frustrated, we've just got to continue to try to get it right. We need to stand up as a team."
Winger Peter Fox scored two tries, the second from an exceptional leap in the air, as Wakefield exacted revenge for two earlier defeats by Hull to secure a third straight win that keeps alive their hopes of reaching the play-offs for the second successive year.
The Wildcats' former Hull boss Richard Agar said: "On balance, I thought we probably had the best of the play. It was a scrappy game and the levels for both sides was not up up to where it should be but I can't fault my players' effort and commitment.
"In the second half we didn't commit as many errors, which was a feature of the game, and when we needed some plays our big players came up with them. Hull kicked better than us but we came up with a couple of kicks that won the game. We showed a lot of character and tenacity in defence. Our alertness probably let us own but our effort all-round was very good."
- Sports & Recreation
- Rugby Football League
- Super League
- Shannon McDonnell