The defender headed off on transfer deadline day in April, replacing Stephen Kelly on loan at Roots Hall. He was recruited by then manager Stewart Robson who had not long before taken over from Rob Newman - in charge during Kelly's stint on the Essex coast.
The 19-year-old centre-half took his bow in League football playing in the unfamiliar position of right-back and Southend were relatively productive, points-wise, in the games that he featured in - securing six points out of nine from encounters with Darlington, Bournemouth and Torquay.
"It went quite well," reflected Ronnie on his return. "The manager bought me in, I was playing right back and I enjoyed the games."
But just a day before his final appearance in a Shrimpers shirt, Robson departed and Steve Wignall was appointed manager - an unsettling experience for a young loanee.
"They bought a new manager in and he wanted to see his long-term side so I didn't play in the last two games.
"It was unsettling and it was a hard time. The manager spoke to me and apologised for what had happened, but it wasn't too bad and I just had to get on with it really."
Ronnie had no hesitation in accepting the chance to sample life in Division Three when opportunity finally knocked - although he did not have much time to ponder the proposition.
"Stephen went to QPR and the deadline was five o'clock on the Thursday. Colin Calderwood asked me if I wanted to go about four so I had to rush to sign for them and went there the next day.
"First of all I was quite happy about it because I didn't have to move and could travel from home. I thought nothing was really happening for me at the time so I went to get a bit of first team experience.
"It was hard at first, but the lads there were good and made me feel welcome. When you have a bit of fun you settle in quickly."
Now he is back Ronnie is hoping for a repeat of the last pre-season where he featured strongly after playing the full 90 minutes of the opener at Stevenage as he aims to plant himself in the mind of the manager.
"Hopefully I can get a few games like I did at the start of the last pre-season. I want to impress and hopefully push for the first team squad again."
Ronnie Henry took plenty of positives from his short, but eventful, spell at Southend United last season.