diff --git a/language.version b/language.version
index 861b218ff..506d50a4f 100644
--- a/language.version
+++ b/language.version
@@ -1,3 +1,3 @@
 [default]
-SWWM_MODVER="\chSWWM \czGZ\c- \cw0.9.11b-pre r352 \cu(Fri 12 Mar 21:36:08 CET 2021)\c-";
-SWWM_SHORTVER="\cw0.9.11b-pre r352 \cu(2021-03-12 21:36:08)\c-";
+SWWM_MODVER="\chSWWM \czGZ\c- \cw0.9.11b-pre r353 \cu(Fri 12 Mar 21:54:57 CET 2021)\c-";
+SWWM_SHORTVER="\cw0.9.11b-pre r353 \cu(2021-03-12 21:54:57)\c-";
diff --git a/zscript/swwm_player.zsc b/zscript/swwm_player.zsc
index afd4cc6bb..edfe1c2b6 100644
--- a/zscript/swwm_player.zsc
+++ b/zscript/swwm_player.zsc
@@ -1144,7 +1144,7 @@ Class Demolitionist : PlayerPawn
 							else if ( pos.z <= florz )
 								tempme.Results.Tier = TIER_LOWER;
 						}
-						if ( BusterWall.Bust(tempme.Results,dmg,self,dir,pos.z+Height/2) )
+						if ( BusterWall.Bust(tempme.Results,dmg,self,dir,pos.z+Height) )
 						{
 							// busted through
 							if ( raging )
diff --git a/zscript/swwm_thinkers.zsc b/zscript/swwm_thinkers.zsc
index f0e02d661..e12004757 100644
--- a/zscript/swwm_thinkers.zsc
+++ b/zscript/swwm_thinkers.zsc
@@ -152,6 +152,7 @@ Class SWWMDamageAccumulator : Thinker
 }
 
 // prevents floors/ceilings from ever moving again, as they're "broken crushers"
+//  optional "instant" parameter is used by wall busting, no crusher malfunction animation will play
 Class SWWMCrusherBroken : Thinker
 {
 	Sector fsec, csec;
@@ -159,7 +160,7 @@ Class SWWMCrusherBroken : Thinker
 	int fphase, cphase;
 	int ftics, ctics;
 
-	static void Create( Sector f, Sector c, double diffh )
+	static void Create( Sector f, Sector c, double diffh, bool instant = false )
 	{
 		if ( !f && !c ) return;
 		let ti = ThinkerIterator.Create("SWWMCrusherBroken",STAT_USER);
@@ -167,7 +168,15 @@ Class SWWMCrusherBroken : Thinker
 		while ( cb = SWWMCrusherBroken(ti.Next()) )
 		{
 			if ( (cb.fsec == f) && (cb.csec == c) )
+			{
+				if ( instant )
+				{
+					// force it to be instant
+					if ( f ) cb.fphase = 3;
+					if ( c ) cb.cphase = 3;
+				}
 				return;	// we already have this
+			}
 			if ( cb.fsec && (cb.fsec == f) )
 			{
 				cb.Destroy();	// we override this one
@@ -186,6 +195,11 @@ Class SWWMCrusherBroken : Thinker
 		cb.diffh = diffh;
 		if ( f && f.floordata ) f.floordata.Destroy();
 		if ( c && c.ceilingdata ) c.ceilingdata.Destroy();
+		if ( instant )
+		{
+			if ( f ) cb.fphase = 3;
+			if ( c ) cb.cphase = 3;
+		}
 	}
 
 	override void Tick()
diff --git a/zscript/weapons/swwm_cbt_fx.zsc b/zscript/weapons/swwm_cbt_fx.zsc
index b0ae3cd70..d23ecd8b5 100644
--- a/zscript/weapons/swwm_cbt_fx.zsc
+++ b/zscript/weapons/swwm_cbt_fx.zsc
@@ -379,17 +379,8 @@ Class BusterWall : Thinker
 			if ( l.Activation&(SPAC_Use|SPAC_Impact) )
 				l.Activation &= ~(SPAC_Use|SPAC_Impact);
 		}
-		// stop all movers
-		let ti2 = ThinkerIterator.Create("SectorEffect",STAT_SECTOREFFECT);
-		SectorEffect se;
-		while ( se = SectorEffect(ti2.Next()) )
-		{
-			if ( se.GetSector() != hs ) continue;
-			se.Destroy();
-		}
-		bust.step = (clamp((b.x-a.x)/4.,2.,32.),clamp((b.y-a.y)/4.,2.,32.),clamp(partheight/4.,2.,32.));
-		// stop all sound sequences
-		for ( int i=1; i<=4; i++ ) hs.StopSoundSequence(i);
+		// stop movement permanently
+		SWWMCrusherBroken.Create(hp?null:hs,hp?hs:null,0.,true);
 		// quakin'
 		let q = Actor.Spawn("BustedQuake",(hs.centerspot.x,hs.centerspot.y,thisheight));
 		q.special1 = clamp(int(girthitude**.15),1,9);
@@ -407,6 +398,7 @@ Class BusterWall : Thinker
 			bust.boundsmin = (a.x,a.y,bust.cutheight)+(1,1,1);
 			bust.boundsmax = (b.x,b.y,thisheight)-(1,1,1);
 		}
+		bust.step = (clamp((b.x-a.x)/4.,2.,32.),clamp((b.y-a.y)/4.,2.,32.),clamp(partheight/4.,2.,32.));
 		bust.SpawnDebris(true);
 		hs.SetTexture(hp,rubble);
 		hs.SetXScale(hp,1.);