The boss was full of praise for the striker after his early opportunist goal and performance in Saturday's vital 2-1 Premiership win against Birmingham City.
"When there is a bereavement in the family, football takes second place," Glenn pointed out.
"But in a way, football is a good release as well.
"I think Robbie will remember that goal, I'm sure he'll dedicate it to his father and you could tell with how he reacted that it was special for him.
"He did very well. He said he wanted to play. He needs to overcome his grief but football is his release at the moment.
"It's a nice time for him to score and get back on the scoresheet. He's been out injured and now he's had his personal grief to deal with and this will be a stepping stone for him."
Glenn Hoddle believes football has provided a release for Robbie Keane from the grief of losing his father a fortnight ago.