If the "special ed girls" (which is a pretty vile way to describe members of the team) are treated exactly the same as everyone else then what has that got to do with everyone gathering round to clap and cheer at the kid struggling and coming in last? Either they are treated exactly the same or they aren't, you really can't have it both ways.
How is it 'vile'?
What's wrong with having your educational needs met in the Special Education department?
It's only vile to acknowledge a disability and speak openly of the section of the school these girls were in if you think disability is something shameful or hard to deal with or accept.
This is not the case in the community I live in (in the US), a community which funds an excellent special department educating students with SEN to age 21 at no cost to parents, providing comprehensive diagnostic services, IEPs, highly qualified teachers and support staff, assistive technology as needed, preparation and support in transitioning from school to adult life in the community - involving independent living, consumer skills, domestic, social/recreational, self-advocacy, adult services/connections, and vocational skills, occupational therapy, physical therapy, social work, and speech and language therapy, an individually-tailored social emotional development programme comprising executive function training, mindfulness, distress tolerance, emotional regulation, and interpersonal effectiveness, facilitated with DBT therapy. There is a programme facilitating return to regular school attendance for students with emotional issues (eg. depression, anxiety) which keep them from engagement. Buses to and from school are provided for all Special Ed students, including students requiring wheelchair lifts.
The two girls put in a huge effort to participate and were an inspiration to everyone else on the team. Cheering them on was a way to acknowledge that.