"Trust me when I say I'll be back better than ever," Cushing wrote. "I appreciate all the love and want u to know WE are STILL winning THIS year's Super Bowl."
Cushing acknowledged on Friday that the tweet drew "a lot of mixed reactions," but he was only trying to send a positive message to his teammates.
"Whatever I can do to help these guys, I'm going to do it," he said.
Houston was crippled by injuries to key players in 2011 and still won the AFC South with a 10-6 record. Cushing thinks navigating through last season's issues will help the Texans now.
"We definitely dealt with a lot of adversity last year, especially from an injury standpoint," Cushing said. "This is a mentally strong team that's built with a lot of depth. I'm not too concerned about that."
Houston coach Gary Kubiak said this week that Dobbins was "the best option" to take over Cushing's role. Dobbins played his first four NFL seasons with San Diego, including one season under Phillips.
Cushing doesn't think Dobbins will need much 1-on-1 mentoring moving forward.
"Tim's played a lot of football, he's been in every single meeting I've been in," Cushing said. "He's learned all the same stuff as me. He's a good player and I have a lot of confidence in him and if he has any questions, I'll be sure to answer them."
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