Dude, a massive critical glitch on a summoning drain resistance I feel definitely could release a free spirit into the world. It's not like you got hit by a bullet, glitched your damage resistance test and then all of a sudden a free spirit appears....but I feel a GM could totally do that, even if it seems a tad random. There's even SR4 material which suggest permanently lowering one of your attributes for such CG's, in this case i would be indirectly lowering your Edge by one. I don't see what you mean by
the only way you could have used it in the spirit of rules was to punish Stryker for it, and him only.
I mean, that's what i ended up doing, but still, maybe i'm ignorant about this, but I don't know what rules you're talking about.
Since this is our first solid Critical Glitch, then let's remember that in the future, I handle glitches with a mishap that's in my opinion as the GM proportional to the massiveness of the glitch or the context of the glitch. I could maybe understand arguments against making the beast force 10 as being perhaps excessive, but arguments against the story behind the mishap i chose for the critical glitch don't make much sense to me. SR4 is very vague and purposely leaves a lot up to the GM. Every once in a while they prescribe the result of glitches, like in extended tests or when using a flamethrower, but they definitely don't say what you can or cannot do with glitches on summoning drain resistance tests.
I mean, if a rigger seriously critical glitched on a test with one of his drones, I could totally see that drone all of a sudden getting hacked by a punk kid street hacker and commandeered and then the rigger would have to deal with this. Critical Glitches of this magnitude are rare though, i wouldn't have that happen on a Critical Glitch with just 3 dice for example.
If you were walking on a tight rope between two buildings though, i definitely would make a glitch or critical glitch on 3 dice mean a fall though, cuz it's a knife's edge really dangerous situation.
In the end, I'm happy I didn't let such an awesome roll go by without a cool story behind it. I don't know why you tried to Banish it....the drain is 2x the number of hits it gets and you'd have to lower his Edge of 10 to 0 with each net hit on your part to banish him. You should have just casted with your 3 IP's and you would have had a bigger chance of surviving. Sorry you didn't want to burn edge and keep Stryker alive.