There was finally some good news for Hammers fans at Cardiff on Saturday as goals from Carlton Cole and Mark Noble earned them just a second win in 14 league games, despite James Tomkins' sending off.
West Ham's previous two fixtures had seen them ship 11 goals and score none in cup maulings against Nottingham Forest and Manchester City.
But victory in south Wales saw them climb out of the relegation zone with Gold and Sullivan watching from the stands.
And McDonald acknowledged Gold and Sullivan for their support of the management and the squad at a difficult time.
"They have shown over the last week that they know that the team spirit is there and they are fighting for the manager and that the manager is the right man for the football club," he said.
"Mr Gold always comes down into the dressing room and the lads like to see him. It's great, especially when we are winning.
"He is a happy man after this win. If we don't win he comes in to try to pick the lads up. if we do win, he enjoys the craic with the lads, you know?
"He comes in and shakes Sam's hand and says 'well done', or 'we might be able to do this a little better'. He is certainly in this with everybody and this is his football club along with Mr Sullivan."
Another positive was Andy Carroll's first appearance of the season as a second-half substitute following a lengthy absence with a foot injury.
McDonald expects it to take a few games for the England striker to find his best form, while Ricardo Vaz Te and James Collins are also close to returning from injury.
He said: "We just have to build the time up for Andy, trying to get some time on the training field and build up his match fitness.
"I think we have to make sure we don't push him too hard and too fast so that he gets another injury.
"We are not concerned about his foot injury, I think that is gone now, touch wood. Then we have to make sure we build him up and make sure he doesn't get another injury.
"It was good for him to come on for 20 minutes and he certainly contributed, that's for sure.
"We have scheduled a game for him behind closed doors.
"We have got Vaz Te who needs another game, James Tomkins will have a game, even though he has been sent off against Cardiff.
"James Collins might be playing behind closed doors as well. They are all coming back and it keeps them ticking over."