Hi I have not posted before but was hoping that some of you might be able to use your vast experience to help!
I have a 20 month old female lurcher - Milli - she is fantastic - the most laid back easy to live with dog ever!  When she meets other dogs she loves to play!  She gets very excited and boisterous but calms down quickly and then enjoys her walk - she has a good recall but does get easily distracted and can only seem to concentrate on one thing at once!  She can become a little bit obsessed with this thing too!
We walk with a 10 month old GSDX who is also female - these 2 get on fantastic and touch wood have never had a cross word.  They are great!  Even when meeting dogs in the park she may be boisterous but never dominant - she is probably the least dominant dog you will ever meet.  Even if a dog warns her or goes for her she never even thinks to retaliate!  I dont think it is in her!  Which I like and dont want to change!  We occasionally meet up with another 10 month old Border Collie - again female.  Milli absolutely adores the BC and barks and gets excited and the play together - sometimes a bit rough but again not aggressively.  The problem is that Milli only meets the BC when she is with GSDX - the BC owner is a friend of the GSDX owner.  When the 3 get together all hell breaks lose!
Milli and the BC play together - they can be quite vocal.  The GSDX then runs into them playing, and attacks either one, which simply winds the other 2 up and they get more excited and play again together ignoing the GSDX, again the GSDX gets more and more aggressive - can you see the vicious circle.  The problem is that all 3 dogs then seem to go deaf - nothing can distract them - toys, sweets, calling, shouting running away - nothing.  So this unacceptable behaviour escalates!
It ends up with very stressed annoyed owners - ie me!  Who put the dogs on the lead and take them home.  If we stop them playing put them on the lead the second you let them off it all starts again - if you let my normally placid dog off she runs obsessively between the 2 of them and doesnt respond!
It is becoming a nightmare - Is it going to be that we cannot walk the 3 together!
Any ideas would be gratefully received.  It is only with this combination that the problem occurs - The GSDX is very protective of Milli especially with other dogs but normally this behaviour stops play and it is discouraged.  But you can recall all the dogs and the situation is under control.
Milli is a very social dog and I do not want this to change or for us to have to avoid meeting other dogs when with the GSDX as this to me reenforces that there is a problem with socialising to her!
Please Please Help and Thank you in advance to anyone who has advice!

Sharron and Milli xxxx

I'm not entirely sure I understand the problem?  Do you need advice on how to get a better recall when the three of them are together?  Or are you concerned about the change in the level of play when there are three of them?  I assume none of them have ever been seriously injured during the sessions.
I think, from what you've said it's just a matter of time - they are all still young and so long as they will all come back to their owners from these 'mad 5 mins' I don't think you've got too much of a problem - it all sounds like very normal young dogs playing nicely together......